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<div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="站点"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="目录" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">目录</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">移至侧栏</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">隐藏</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">序言</div> </a> </li> <li id="toc-在数学中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在数学中"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>在数学中</span> </div> </a> <button aria-controls="toc-在数学中-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>开关在数学中子章节</span> </button> <ul id="toc-在数学中-sublist" class="vector-toc-list"> <li id="toc-基本运算" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#基本运算"> <div class="vector-toc-text"> <span class="vector-toc-numb">1.1</span> <span>基本运算</span> </div> </a> <ul id="toc-基本运算-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-在汉语中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在汉语中"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>在汉语中</span> </div> </a> <button aria-controls="toc-在汉语中-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>开关在汉语中子章节</span> </button> <ul id="toc-在汉语中-sublist" class="vector-toc-list"> <li id="toc-用“二”及“贰”的情况" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#用“二”及“贰”的情况"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>用“二”及“贰”的情况</span> </div> </a> <ul id="toc-用“二”及“贰”的情况-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-用“两”的情况" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#用“两”的情况"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>用“两”的情况</span> </div> </a> <ul id="toc-用“两”的情况-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-在科学中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在科学中"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>在科学中</span> </div> </a> <ul id="toc-在科学中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-在人类文化中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在人类文化中"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>在人类文化中</span> </div> </a> <ul id="toc-在人类文化中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-在軍事政治中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在軍事政治中"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>在軍事政治中</span> </div> </a> <ul id="toc-在軍事政治中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-在地理中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在地理中"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>在地理中</span> </div> </a> <button aria-controls="toc-在地理中-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>开关在地理中子章节</span> </button> <ul id="toc-在地理中-sublist" class="vector-toc-list"> <li id="toc-兩色國旗" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#兩色國旗"> <div class="vector-toc-text"> <span class="vector-toc-numb">6.1</span> <span>兩色國旗</span> </div> </a> <ul id="toc-兩色國旗-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-在曆法中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在曆法中"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>在曆法中</span> </div> </a> <ul id="toc-在曆法中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-在體育中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在體育中"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>在體育中</span> </div> </a> <ul id="toc-在體育中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-在符号位置中" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#在符号位置中"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>在符号位置中</span> </div> </a> <ul id="toc-在符号位置中-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-参见" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#参见"> <div class="vector-toc-text"> <span class="vector-toc-numb">10</span> <span>参见</span> </div> </a> <ul id="toc-参见-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-另見" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#另見"> <div class="vector-toc-text"> <span class="vector-toc-numb">11</span> <span>另見</span> </div> </a> <ul id="toc-另見-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-参考文献" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#参考文献"> <div class="vector-toc-text"> <span class="vector-toc-numb">12</span> <span>参考文献</span> </div> </a> <ul id="toc-参考文献-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="目录" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="开关目录" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">开关目录</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">2</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="前往另一种语言写成的文章。179种语言可用" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-179" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">179种语言</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ab mw-list-item"><a href="https://ab.wikipedia.org/wiki/2_(%D0%B0%D1%85%D1%8B%D4%A5%D1%85%D1%8C%D0%B0%D3%A1%D0%B0%D1%80%D0%B0)" title="2 (ахыԥхьаӡара) – 阿布哈西亚语" lang="ab" hreflang="ab" data-title="2 (ахыԥхьаӡара)" data-language-autonym="Аԥсшәа" data-language-local-name="阿布哈西亚语" class="interlanguage-link-target"><span>Аԥсшәа</span></a></li><li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/2_(getal)" title="2 (getal) – 南非荷兰语" lang="af" hreflang="af" data-title="2 (getal)" data-language-autonym="Afrikaans" data-language-local-name="南非荷兰语" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%88%81%E1%88%88%E1%89%B5" title="ሁለት – 阿姆哈拉语" lang="am" hreflang="am" data-title="ሁለት" data-language-autonym="አማርኛ" data-language-local-name="阿姆哈拉语" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/2_(get%C3%A6l)" title="2 (getæl) – 古英语" lang="ang" hreflang="ang" data-title="2 (getæl)" data-language-autonym="Ænglisc" data-language-local-name="古英语" class="interlanguage-link-target"><span>Ænglisc</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/2_(%D8%B9%D8%AF%D8%AF)" title="2 (عدد) – 阿拉伯语" lang="ar" hreflang="ar" data-title="2 (عدد)" data-language-autonym="العربية" data-language-local-name="阿拉伯语" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arc mw-list-item"><a href="https://arc.wikipedia.org/wiki/2_(%DC%A1%DC%A2%DC%9D%DC%A2%DC%90)" title="2 (ܡܢܝܢܐ) – 阿拉米语" lang="arc" hreflang="arc" data-title="2 (ܡܢܝܢܐ)" data-language-autonym="ܐܪܡܝܐ" data-language-local-name="阿拉米语" class="interlanguage-link-target"><span>ܐܪܡܝܐ</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/2" title="2 – 摩洛哥阿拉伯文" lang="ary" hreflang="ary" data-title="2" data-language-autonym="الدارجة" data-language-local-name="摩洛哥阿拉伯文" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A7%A8" title="২ – 阿萨姆语" lang="as" hreflang="as" data-title="২" data-language-autonym="অসমীয়া" data-language-local-name="阿萨姆语" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Dos" title="Dos – 阿斯图里亚斯语" lang="ast" hreflang="ast" data-title="Dos" data-language-autonym="Asturianu" data-language-local-name="阿斯图里亚斯语" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-av mw-list-item"><a href="https://av.wikipedia.org/wiki/%D0%9A%D3%80%D0%B8%D0%B3%D0%BE" title="КӀиго – 阿瓦尔语" lang="av" hreflang="av" data-title="КӀиго" data-language-autonym="Авар" data-language-local-name="阿瓦尔语" class="interlanguage-link-target"><span>Авар</span></a></li><li class="interlanguage-link interwiki-ay mw-list-item"><a href="https://ay.wikipedia.org/wiki/Paya" title="Paya – 艾马拉语" lang="ay" hreflang="ay" data-title="Paya" data-language-autonym="Aymar aru" data-language-local-name="艾马拉语" class="interlanguage-link-target"><span>Aymar aru</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/2_(%C9%99d%C9%99d)" title="2 (ədəd) – 阿塞拜疆语" lang="az" hreflang="az" data-title="2 (ədəd)" data-language-autonym="Azərbaycanca" data-language-local-name="阿塞拜疆语" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%DB%B2_(%D8%B3%D8%A7%DB%8C%DB%8C)" title="۲ (سایی) – South Azerbaijani" lang="azb" hreflang="azb" data-title="۲ (سایی)" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/2_(%D2%BB%D0%B0%D0%BD)" title="2 (һан) – 巴什基尔语" lang="ba" hreflang="ba" data-title="2 (һан)" data-language-autonym="Башҡортса" data-language-local-name="巴什基尔语" class="interlanguage-link-target"><span>Башҡортса</span></a></li><li class="interlanguage-link interwiki-ban mw-list-item"><a href="https://ban.wikipedia.org/wiki/2_(angka)" title="2 (angka) – 巴厘语" lang="ban" hreflang="ban" data-title="2 (angka)" data-language-autonym="Basa Bali" data-language-local-name="巴厘语" class="interlanguage-link-target"><span>Basa Bali</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/2_(%D0%BB%D1%96%D0%BA)" title="2 (лік) – 白俄罗斯语" lang="be" hreflang="be" data-title="2 (лік)" data-language-autonym="Беларуская" data-language-local-name="白俄罗斯语" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/2_(%D0%BB%D1%96%D0%BA)" title="2 (лік) – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="2 (лік)" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/2_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="2 (число) – 保加利亚语" lang="bg" hreflang="bg" data-title="2 (число)" data-language-autonym="Български" data-language-local-name="保加利亚语" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bi mw-list-item"><a href="https://bi.wikipedia.org/wiki/Tu" title="Tu – 比斯拉马语" lang="bi" hreflang="bi" data-title="Tu" data-language-autonym="Bislama" data-language-local-name="比斯拉马语" class="interlanguage-link-target"><span>Bislama</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A7%A8_(%E0%A6%B8%E0%A6%82%E0%A6%96%E0%A7%8D%E0%A6%AF%E0%A6%BE)" title="২ (সংখ্যা) – 孟加拉语" lang="bn" hreflang="bn" data-title="২ (সংখ্যা)" data-language-autonym="বাংলা" data-language-local-name="孟加拉语" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BC%A2_(%E0%BD%82%E0%BE%B2%E0%BD%84%E0%BD%A6%E0%BC%8B%E0%BD%80%E0%BC%8D)" title="༢ (གྲངས་ཀ།) – 藏语" lang="bo" hreflang="bo" data-title="༢ (གྲངས་ཀ།)" data-language-autonym="བོད་ཡིག" data-language-local-name="藏语" class="interlanguage-link-target"><span>བོད་ཡིག</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Daou" title="Daou – 布列塔尼语" lang="br" hreflang="br" data-title="Daou" data-language-autonym="Brezhoneg" data-language-local-name="布列塔尼语" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/2_(broj)" title="2 (broj) – 波斯尼亚语" lang="bs" hreflang="bs" data-title="2 (broj)" data-language-autonym="Bosanski" data-language-local-name="波斯尼亚语" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-bug mw-list-item"><a href="https://bug.wikipedia.org/wiki/2_(nomoro)" title="2 (nomoro) – 布吉语" lang="bug" hreflang="bug" data-title="2 (nomoro)" data-language-autonym="Basa Ugi" data-language-local-name="布吉语" class="interlanguage-link-target"><span>Basa Ugi</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Dos" title="Dos – 加泰罗尼亚语" lang="ca" hreflang="ca" data-title="Dos" data-language-autonym="Català" data-language-local-name="加泰罗尼亚语" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/2" title="2 – Mindong" lang="cdo" hreflang="cdo" data-title="2" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target"><span>閩東語 / Mìng-dĕ̤ng-ngṳ̄</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%A8%D0%B8%D1%8A" title="Шиъ – 车臣语" lang="ce" hreflang="ce" data-title="Шиъ" data-language-autonym="Нохчийн" data-language-local-name="车臣语" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/2_(numero)" title="2 (numero) – 宿务语" lang="ceb" hreflang="ceb" data-title="2 (numero)" data-language-autonym="Cebuano" data-language-local-name="宿务语" class="interlanguage-link-target"><span>Cebuano</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D9%A2_(%DA%98%D9%85%D8%A7%D8%B1%DB%95)" title="٢ (ژمارە) – 中库尔德语" lang="ckb" hreflang="ckb" data-title="٢ (ژمارە)" data-language-autonym="کوردی" data-language-local-name="中库尔德语" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/2_(%C4%8D%C3%ADslo)" title="2 (číslo) – 捷克语" lang="cs" hreflang="cs" data-title="2 (číslo)" data-language-autonym="Čeština" data-language-local-name="捷克语" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cu mw-list-item"><a href="https://cu.wikipedia.org/wiki/%D0%94%D1%8A%D0%B2%D0%B0" title="Дъва – 教会斯拉夫语" lang="cu" hreflang="cu" data-title="Дъва" data-language-autonym="Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ" data-language-local-name="教会斯拉夫语" class="interlanguage-link-target"><span>Словѣньскъ / ⰔⰎⰑⰂⰡⰐⰠⰔⰍⰟ</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/2_(%D1%85%D0%B8%D1%81%D0%B5%D0%BF)" title="2 (хисеп) – 楚瓦什语" lang="cv" hreflang="cv" data-title="2 (хисеп)" data-language-autonym="Чӑвашла" data-language-local-name="楚瓦什语" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Dau" title="Dau – 威尔士语" lang="cy" hreflang="cy" data-title="Dau" data-language-autonym="Cymraeg" data-language-local-name="威尔士语" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/2_(tal)" title="2 (tal) – 丹麦语" lang="da" hreflang="da" data-title="2 (tal)" data-language-autonym="Dansk" data-language-local-name="丹麦语" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-dag mw-list-item"><a href="https://dag.wikipedia.org/wiki/Ayi" title="Ayi – Dagbani" lang="dag" hreflang="dag" data-title="Ayi" data-language-autonym="Dagbanli" data-language-local-name="Dagbani" class="interlanguage-link-target"><span>Dagbanli</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Zwei" title="Zwei – 德语" lang="de" hreflang="de" data-title="Zwei" data-language-autonym="Deutsch" data-language-local-name="德语" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/2_(%CE%B1%CF%81%CE%B9%CE%B8%CE%BC%CF%8C%CF%82)" title="2 (αριθμός) – 希腊语" lang="el" hreflang="el" data-title="2 (αριθμός)" data-language-autonym="Ελληνικά" data-language-local-name="希腊语" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-eml mw-list-item"><a href="https://eml.wikipedia.org/wiki/2_(n%C3%B9mer)" title="2 (nùmer) – Emiliano-Romagnolo" lang="egl" hreflang="egl" data-title="2 (nùmer)" data-language-autonym="Emiliàn e rumagnòl" data-language-local-name="Emiliano-Romagnolo" class="interlanguage-link-target"><span>Emiliàn e rumagnòl</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/2" title="2 – 英语" lang="en" hreflang="en" data-title="2" data-language-autonym="English" data-language-local-name="英语" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/2_(nombro)" title="2 (nombro) – 世界语" lang="eo" hreflang="eo" data-title="2 (nombro)" data-language-autonym="Esperanto" data-language-local-name="世界语" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Dos" title="Dos – 西班牙语" lang="es" hreflang="es" data-title="Dos" data-language-autonym="Español" data-language-local-name="西班牙语" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Kaks" title="Kaks – 爱沙尼亚语" lang="et" hreflang="et" data-title="Kaks" data-language-autonym="Eesti" data-language-local-name="爱沙尼亚语" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Bi" title="Bi – 巴斯克语" lang="eu" hreflang="eu" data-title="Bi" data-language-autonym="Euskara" data-language-local-name="巴斯克语" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-ext mw-list-item"><a href="https://ext.wikipedia.org/wiki/Dos" title="Dos – 埃斯特雷馬杜拉文" lang="ext" hreflang="ext" data-title="Dos" data-language-autonym="Estremeñu" data-language-local-name="埃斯特雷馬杜拉文" class="interlanguage-link-target"><span>Estremeñu</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DB%B2" title="۲ – 波斯语" lang="fa" hreflang="fa" data-title="۲" data-language-autonym="فارسی" data-language-local-name="波斯语" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-ff mw-list-item"><a href="https://ff.wikipedia.org/wiki/%C6%8Ai%C9%97i" title="Ɗiɗi – 富拉语" lang="ff" hreflang="ff" data-title="Ɗiɗi" data-language-autonym="Fulfulde" data-language-local-name="富拉语" class="interlanguage-link-target"><span>Fulfulde</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/2_(luku)" title="2 (luku) – 芬兰语" lang="fi" hreflang="fi" data-title="2 (luku)" data-language-autonym="Suomi" data-language-local-name="芬兰语" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Rua" title="Rua – 斐济语" lang="fj" hreflang="fj" data-title="Rua" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="斐济语" class="interlanguage-link-target"><span>Na Vosa Vakaviti</span></a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/2_(tal)" title="2 (tal) – 法罗语" lang="fo" hreflang="fo" data-title="2 (tal)" data-language-autonym="Føroyskt" data-language-local-name="法罗语" class="interlanguage-link-target"><span>Føroyskt</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/2_(nombre)" title="2 (nombre) – 法语" lang="fr" hreflang="fr" data-title="2 (nombre)" data-language-autonym="Français" data-language-local-name="法语" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Tau" title="Tau – 北弗里西亚语" lang="frr" hreflang="frr" data-title="Tau" data-language-autonym="Nordfriisk" data-language-local-name="北弗里西亚语" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/2_(numar)" title="2 (numar) – 弗留利语" lang="fur" hreflang="fur" data-title="2 (numar)" data-language-autonym="Furlan" data-language-local-name="弗留利语" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/2_(uimhir)" title="2 (uimhir) – 爱尔兰语" lang="ga" hreflang="ga" data-title="2 (uimhir)" data-language-autonym="Gaeilge" data-language-local-name="爱尔兰语" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/2" title="2 – 赣语" lang="gan" hreflang="gan" data-title="2" data-language-autonym="贛語" data-language-local-name="赣语" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Dous" title="Dous – 加利西亚语" lang="gl" hreflang="gl" data-title="Dous" data-language-autonym="Galego" data-language-local-name="加利西亚语" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Mok%C3%B5i" title="Mokõi – 瓜拉尼语" lang="gn" hreflang="gn" data-title="Mokõi" data-language-autonym="Avañe'ẽ" data-language-local-name="瓜拉尼语" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-gor mw-list-item"><a href="https://gor.wikipedia.org/wiki/2" title="2 – 哥伦打洛语" lang="gor" hreflang="gor" data-title="2" data-language-autonym="Bahasa Hulontalo" data-language-local-name="哥伦打洛语" class="interlanguage-link-target"><span>Bahasa Hulontalo</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AB%A8_(%E0%AA%AC%E0%AB%87)" title="૨ (બે) – 古吉拉特语" lang="gu" hreflang="gu" data-title="૨ (બે)" data-language-autonym="ગુજરાતી" data-language-local-name="古吉拉特语" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/2_(al%C6%99alami)" title="2 (alƙalami) – 豪萨语" lang="ha" hreflang="ha" data-title="2 (alƙalami)" data-language-autonym="Hausa" data-language-local-name="豪萨语" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/2" title="2 – 客家语" lang="hak" hreflang="hak" data-title="2" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="客家语" class="interlanguage-link-target"><span>客家語 / Hak-kâ-ngî</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/2_(%D7%9E%D7%A1%D7%A4%D7%A8)" title="2 (מספר) – 希伯来语" lang="he" hreflang="he" data-title="2 (מספר)" data-language-autonym="עברית" data-language-local-name="希伯来语" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A5%A8" title="२ – 印地语" lang="hi" hreflang="hi" data-title="२" data-language-autonym="हिन्दी" data-language-local-name="印地语" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Dva" title="Dva – 克罗地亚语" lang="hr" hreflang="hr" data-title="Dva" data-language-autonym="Hrvatski" data-language-local-name="克罗地亚语" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/2_(nonm)" title="2 (nonm) – 海地克里奥尔语" lang="ht" hreflang="ht" data-title="2 (nonm)" data-language-autonym="Kreyòl ayisyen" data-language-local-name="海地克里奥尔语" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/2_(sz%C3%A1m)" title="2 (szám) – 匈牙利语" lang="hu" hreflang="hu" data-title="2 (szám)" data-language-autonym="Magyar" data-language-local-name="匈牙利语" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B5%D6%80%D5%AF%D5%B8%D6%82" title="Երկու – 亚美尼亚语" lang="hy" hreflang="hy" data-title="Երկու" data-language-autonym="Հայերեն" data-language-local-name="亚美尼亚语" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/2_(numero)" title="2 (numero) – 国际语" lang="ia" hreflang="ia" data-title="2 (numero)" data-language-autonym="Interlingua" data-language-local-name="国际语" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/2_(angka)" title="2 (angka) – 印度尼西亚语" lang="id" hreflang="id" data-title="2 (angka)" data-language-autonym="Bahasa Indonesia" data-language-local-name="印度尼西亚语" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ig mw-list-item"><a href="https://ig.wikipedia.org/wiki/Ab%E1%BB%A5o" title="Abụo – 伊博语" lang="ig" hreflang="ig" data-title="Abụo" data-language-autonym="Igbo" data-language-local-name="伊博语" class="interlanguage-link-target"><span>Igbo</span></a></li><li class="interlanguage-link interwiki-ik mw-list-item"><a href="https://ik.wikipedia.org/wiki/Mal%C4%A1uk" title="Malġuk – 伊努皮克语" lang="ik" hreflang="ik" data-title="Malġuk" data-language-autonym="Iñupiatun" data-language-local-name="伊努皮克语" class="interlanguage-link-target"><span>Iñupiatun</span></a></li><li class="interlanguage-link interwiki-inh mw-list-item"><a href="https://inh.wikipedia.org/wiki/2_(%D1%82%D0%B0%D1%8C%D1%80%D0%B0%D1%85%D1%8C)" title="2 (таьрахь) – 印古什语" lang="inh" hreflang="inh" data-title="2 (таьрахь)" data-language-autonym="ГӀалгӀай" data-language-local-name="印古什语" class="interlanguage-link-target"><span>ГӀалгӀай</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Tveir" title="Tveir – 冰岛语" lang="is" hreflang="is" data-title="Tveir" data-language-autonym="Íslenska" data-language-local-name="冰岛语" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/2_(numero)" title="2 (numero) – 意大利语" lang="it" hreflang="it" data-title="2 (numero)" data-language-autonym="Italiano" data-language-local-name="意大利语" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/2" title="2 – 日语" lang="ja" hreflang="ja" data-title="2" data-language-autonym="日本語" data-language-local-name="日语" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/2_(angka)" title="2 (angka) – 爪哇语" lang="jv" hreflang="jv" data-title="2 (angka)" data-language-autonym="Jawa" data-language-local-name="爪哇语" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/2_(%E1%83%A0%E1%83%98%E1%83%AA%E1%83%AE%E1%83%95%E1%83%98)" title="2 (რიცხვი) – 格鲁吉亚语" lang="ka" hreflang="ka" data-title="2 (რიცხვი)" data-language-autonym="ქართული" data-language-local-name="格鲁吉亚语" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kcg mw-list-item"><a href="https://kcg.wikipedia.org/wiki/2" title="2 – 卡塔布语" lang="kcg" hreflang="kcg" data-title="2" data-language-autonym="Tyap" data-language-local-name="卡塔布语" class="interlanguage-link-target"><span>Tyap</span></a></li><li class="interlanguage-link interwiki-kge mw-list-item"><a href="https://kge.wikipedia.org/wiki/2" title="2 – Komering" lang="kge" hreflang="kge" data-title="2" data-language-autonym="Kumoring" data-language-local-name="Komering" class="interlanguage-link-target"><span>Kumoring</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/2_(%D1%81%D0%B0%D0%BD)" title="2 (сан) – 哈萨克语" lang="kk" hreflang="kk" data-title="2 (сан)" data-language-autonym="Қазақша" data-language-local-name="哈萨克语" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-km mw-list-item"><a href="https://km.wikipedia.org/wiki/%E1%9F%A2_(%E1%9E%9B%E1%9F%81%E1%9E%81)" title="២ (លេខ) – 高棉语" lang="km" hreflang="km" data-title="២ (លេខ)" data-language-autonym="ភាសាខ្មែរ" data-language-local-name="高棉语" class="interlanguage-link-target"><span>ភាសាខ្មែរ</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%8E%E0%B2%B0%E0%B2%A1%E0%B3%81" title="ಎರಡು – 卡纳达语" lang="kn" hreflang="kn" data-title="ಎರಡು" data-language-autonym="ಕನ್ನಡ" data-language-local-name="卡纳达语" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/2" title="2 – 韩语" lang="ko" hreflang="ko" data-title="2" data-language-autonym="한국어" data-language-local-name="韩语" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-koi mw-list-item"><a href="https://koi.wikipedia.org/wiki/2_(%D0%BA%D1%8B%D0%BA)" title="2 (кык) – 科米-彼尔米亚克语" lang="koi" hreflang="koi" data-title="2 (кык)" data-language-autonym="Перем коми" data-language-local-name="科米-彼尔米亚克语" class="interlanguage-link-target"><span>Перем коми</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/2_(%DA%AF%D8%B1%D9%8E%D9%9B%D9%86%D9%9B%D8%AF)" title="2 (گرَٛنٛد) – 克什米尔语" lang="ks" hreflang="ks" data-title="2 (گرَٛنٛد)" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="克什米尔语" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Du" title="Du – 库尔德语" lang="ku" hreflang="ku" data-title="Du" data-language-autonym="Kurdî" data-language-local-name="库尔德语" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-kv mw-list-item"><a href="https://kv.wikipedia.org/wiki/2_(%D0%BA%D1%8B%D0%BA)" title="2 (кык) – 科米语" lang="kv" hreflang="kv" data-title="2 (кык)" data-language-autonym="Коми" data-language-local-name="科米语" class="interlanguage-link-target"><span>Коми</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Duo" title="Duo – 拉丁语" lang="la" hreflang="la" data-title="Duo" data-language-autonym="Latina" data-language-local-name="拉丁语" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Zwee" title="Zwee – 卢森堡语" lang="lb" hreflang="lb" data-title="Zwee" data-language-autonym="Lëtzebuergesch" data-language-local-name="卢森堡语" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lbe mw-list-item"><a href="https://lbe.wikipedia.org/wiki/%D0%9A%D3%80%D0%B8%D0%B2%D0%B0" title="КӀива – Lak" lang="lbe" hreflang="lbe" data-title="КӀива" data-language-autonym="Лакку" data-language-local-name="Lak" class="interlanguage-link-target"><span>Лакку</span></a></li><li class="interlanguage-link interwiki-lg mw-list-item"><a href="https://lg.wikipedia.org/wiki/Bbiri" title="Bbiri – 卢干达语" lang="lg" hreflang="lg" data-title="Bbiri" data-language-autonym="Luganda" data-language-local-name="卢干达语" class="interlanguage-link-target"><span>Luganda</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Twie%C3%AB" title="Twieë – 林堡语" lang="li" hreflang="li" data-title="Twieë" data-language-autonym="Limburgs" data-language-local-name="林堡语" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/N%C3%BCmar_2" title="Nümar 2 – 倫巴底文" lang="lmo" hreflang="lmo" data-title="Nümar 2" data-language-autonym="Lombard" data-language-local-name="倫巴底文" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/2_(motuya)" title="2 (motuya) – 林加拉语" lang="ln" hreflang="ln" data-title="2 (motuya)" data-language-autonym="Lingála" data-language-local-name="林加拉语" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/2_(skai%C4%8Dius)" title="2 (skaičius) – 立陶宛语" lang="lt" hreflang="lt" data-title="2 (skaičius)" data-language-autonym="Lietuvių" data-language-local-name="立陶宛语" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/2_(skaitlis)" title="2 (skaitlis) – 拉脱维亚语" lang="lv" hreflang="lv" data-title="2 (skaitlis)" data-language-autonym="Latviešu" data-language-local-name="拉脱维亚语" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/2_(%D0%B1%D1%80%D0%BE%D1%98)" title="2 (број) – 马其顿语" lang="mk" hreflang="mk" data-title="2 (број)" data-language-autonym="Македонски" data-language-local-name="马其顿语" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/2_(%E0%B4%85%E0%B4%95%E0%B5%8D%E0%B4%95%E0%B4%82)" title="2 (അക്കം) – 马拉雅拉姆语" lang="ml" hreflang="ml" data-title="2 (അക്കം)" data-language-autonym="മലയാളം" data-language-local-name="马拉雅拉姆语" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A5%D0%BE%D1%91%D1%80" title="Хоёр – 蒙古语" lang="mn" hreflang="mn" data-title="Хоёр" data-language-autonym="Монгол" data-language-local-name="蒙古语" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mni mw-list-item"><a href="https://mni.wikipedia.org/wiki/%EA%AF%B2" title="꯲ – 曼尼普尔语" lang="mni" hreflang="mni" data-title="꯲" data-language-autonym="ꯃꯤꯇꯩ ꯂꯣꯟ" data-language-local-name="曼尼普尔语" class="interlanguage-link-target"><span>ꯃꯤꯇꯩ ꯂꯣꯟ</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A5%A8_(%E0%A4%B8%E0%A4%82%E0%A4%96%E0%A5%8D%E0%A4%AF%E0%A4%BE)" title="२ (संख्या) – 马拉地语" lang="mr" hreflang="mr" data-title="२ (संख्या)" data-language-autonym="मराठी" data-language-local-name="马拉地语" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/2_(nombor)" title="2 (nombor) – 马来语" lang="ms" hreflang="ms" data-title="2 (nombor)" data-language-autonym="Bahasa Melayu" data-language-local-name="马来语" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%81%82" title="၂ – 缅甸语" lang="my" hreflang="my" data-title="၂" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="缅甸语" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-myv mw-list-item"><a href="https://myv.wikipedia.org/wiki/2_(%D0%BB%D0%BE%D0%B2%D0%BE%D0%BC%D0%B0_%D0%B2%D0%B0%D0%BB)" title="2 (ловома вал) – 厄尔兹亚语" lang="myv" hreflang="myv" data-title="2 (ловома вал)" data-language-autonym="Эрзянь" data-language-local-name="厄尔兹亚语" class="interlanguage-link-target"><span>Эрзянь</span></a></li><li class="interlanguage-link interwiki-mzn mw-list-item"><a href="https://mzn.wikipedia.org/wiki/%DB%B2_(%D8%B9%D8%AF%D8%AF)" title="۲ (عدد) – 马赞德兰语" lang="mzn" hreflang="mzn" data-title="۲ (عدد)" data-language-autonym="مازِرونی" data-language-local-name="马赞德兰语" class="interlanguage-link-target"><span>مازِرونی</span></a></li><li class="interlanguage-link interwiki-nah mw-list-item"><a href="https://nah.wikipedia.org/wiki/Ome" title="Ome – Nahuatl" lang="nah" hreflang="nah" data-title="Ome" data-language-autonym="Nāhuatl" data-language-local-name="Nahuatl" class="interlanguage-link-target"><span>Nāhuatl</span></a></li><li class="interlanguage-link interwiki-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/Ddoje" title="Ddoje – 那不勒斯语" lang="nap" hreflang="nap" data-title="Ddoje" data-language-autonym="Napulitano" data-language-local-name="那不勒斯语" class="interlanguage-link-target"><span>Napulitano</span></a></li><li class="interlanguage-link interwiki-nds-nl mw-list-item"><a href="https://nds-nl.wikipedia.org/wiki/2_(getal)" title="2 (getal) – 低萨克森语" lang="nds-NL" hreflang="nds-NL" data-title="2 (getal)" data-language-autonym="Nedersaksies" data-language-local-name="低萨克森语" class="interlanguage-link-target"><span>Nedersaksies</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A5%A8" title="२ – 尼泊尔语" lang="ne" hreflang="ne" data-title="२" data-language-autonym="नेपाली" data-language-local-name="尼泊尔语" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/2_(getal)" title="2 (getal) – 荷兰语" lang="nl" hreflang="nl" data-title="2 (getal)" data-language-autonym="Nederlands" data-language-local-name="荷兰语" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Talet_2" title="Talet 2 – 挪威尼诺斯克语" lang="nn" hreflang="nn" data-title="Talet 2" data-language-autonym="Norsk nynorsk" data-language-local-name="挪威尼诺斯克语" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/2_(tall)" title="2 (tall) – 书面挪威语" lang="nb" hreflang="nb" data-title="2 (tall)" data-language-autonym="Norsk bokmål" data-language-local-name="书面挪威语" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nso mw-list-item"><a href="https://nso.wikipedia.org/wiki/2_(nomoro)" title="2 (nomoro) – 北索托语" lang="nso" hreflang="nso" data-title="2 (nomoro)" data-language-autonym="Sesotho sa Leboa" data-language-local-name="北索托语" class="interlanguage-link-target"><span>Sesotho sa Leboa</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Lama" title="Lama – 奥罗莫语" lang="om" hreflang="om" data-title="Lama" data-language-autonym="Oromoo" data-language-local-name="奥罗莫语" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AD%A8_(%E0%AC%B8%E0%AC%82%E0%AC%96%E0%AD%8D%E0%AD%9F%E0%AC%BE)" title="୨ (ସଂଖ୍ୟା) – 奥里亚语" lang="or" hreflang="or" data-title="୨ (ସଂଖ୍ୟା)" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="奥里亚语" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/2" title="2 – 旁遮普语" lang="pa" hreflang="pa" data-title="2" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="旁遮普语" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pdc mw-list-item"><a href="https://pdc.wikipedia.org/wiki/Zwee" title="Zwee – 賓夕法尼亞德文" lang="pdc" hreflang="pdc" data-title="Zwee" data-language-autonym="Deitsch" data-language-local-name="賓夕法尼亞德文" class="interlanguage-link-target"><span>Deitsch</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/2_(liczba)" title="2 (liczba) – 波兰语" lang="pl" hreflang="pl" data-title="2 (liczba)" data-language-autonym="Polski" data-language-local-name="波兰语" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/2" title="2 – Western Punjabi" lang="pnb" hreflang="pnb" data-title="2" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%DB%B2" title="۲ – 普什图语" lang="ps" hreflang="ps" data-title="۲" data-language-autonym="پښتو" data-language-local-name="普什图语" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Dois" title="Dois – 葡萄牙语" lang="pt" hreflang="pt" data-title="Dois" data-language-autonym="Português" data-language-local-name="葡萄牙语" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Iskay" title="Iskay – 克丘亚语" lang="qu" hreflang="qu" data-title="Iskay" data-language-autonym="Runa Simi" data-language-local-name="克丘亚语" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-rn mw-list-item"><a href="https://rn.wikipedia.org/wiki/Kabiri" title="Kabiri – 隆迪语" lang="rn" hreflang="rn" data-title="Kabiri" data-language-autonym="Ikirundi" data-language-local-name="隆迪语" class="interlanguage-link-target"><span>Ikirundi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/2_(cifr%C4%83)" title="2 (cifră) – 罗马尼亚语" lang="ro" hreflang="ro" data-title="2 (cifră)" data-language-autonym="Română" data-language-local-name="罗马尼亚语" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/2_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="2 (число) – 俄语" lang="ru" hreflang="ru" data-title="2 (число)" data-language-autonym="Русский" data-language-local-name="俄语" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/2_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="2 (число) – 盧森尼亞文" lang="rue" hreflang="rue" data-title="2 (число)" data-language-autonym="Русиньскый" data-language-local-name="盧森尼亞文" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-rw mw-list-item"><a href="https://rw.wikipedia.org/wiki/Kabiri" title="Kabiri – 卢旺达语" lang="rw" hreflang="rw" data-title="Kabiri" data-language-autonym="Ikinyarwanda" data-language-local-name="卢旺达语" class="interlanguage-link-target"><span>Ikinyarwanda</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%98%D0%BA%D0%BA%D0%B8_(%D0%B0%D1%85%D1%81%D0%B0%D0%B0%D0%BD)" title="Икки (ахсаан) – 萨哈语" lang="sah" hreflang="sah" data-title="Икки (ахсаан)" data-language-autonym="Саха тыла" data-language-local-name="萨哈语" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%92_(%E1%B1%B5%E1%B1%9F%E1%B1%A8)" title="᱒ (ᱵᱟᱨ) – 桑塔利语" lang="sat" hreflang="sat" data-title="᱒ (ᱵᱟᱨ)" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="桑塔利语" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/2_(n%C3%B9mmuru)" title="2 (nùmmuru) – 西西里语" lang="scn" hreflang="scn" data-title="2 (nùmmuru)" data-language-autonym="Sicilianu" data-language-local-name="西西里语" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/2_(nummer)" title="2 (nummer) – 苏格兰语" lang="sco" hreflang="sco" data-title="2 (nummer)" data-language-autonym="Scots" data-language-local-name="苏格兰语" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D9%BB%DB%81" title="ٻہ – 信德语" lang="sd" hreflang="sd" data-title="ٻہ" data-language-autonym="سنڌي" data-language-local-name="信德语" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/2_(broj)" title="2 (broj) – 塞尔维亚-克罗地亚语" lang="sh" hreflang="sh" data-title="2 (broj)" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="塞尔维亚-克罗地亚语" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-shi mw-list-item"><a href="https://shi.wikipedia.org/wiki/Sin" title="Sin – 希尔哈语" lang="shi" hreflang="shi" data-title="Sin" data-language-autonym="Taclḥit" data-language-local-name="希尔哈语" class="interlanguage-link-target"><span>Taclḥit</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%AF%E0%B7%99%E0%B6%9A" title="දෙක – 僧伽罗语" lang="si" hreflang="si" data-title="දෙක" data-language-autonym="සිංහල" data-language-local-name="僧伽罗语" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/2_(number)" title="2 (number) – Simple English" lang="en-simple" hreflang="en-simple" data-title="2 (number)" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/2_(%C4%8D%C3%ADslo)" title="2 (číslo) – 斯洛伐克语" lang="sk" hreflang="sk" data-title="2 (číslo)" data-language-autonym="Slovenčina" data-language-local-name="斯洛伐克语" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/2_(%C5%A1tevilo)" title="2 (število) – 斯洛文尼亚语" lang="sl" hreflang="sl" data-title="2 (število)" data-language-autonym="Slovenščina" data-language-local-name="斯洛文尼亚语" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sm mw-list-item"><a href="https://sm.wikipedia.org/wiki/Lua_(numera)" title="Lua (numera) – 萨摩亚语" lang="sm" hreflang="sm" data-title="Lua (numera)" data-language-autonym="Gagana Samoa" data-language-local-name="萨摩亚语" class="interlanguage-link-target"><span>Gagana Samoa</span></a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Piri" title="Piri – 绍纳语" lang="sn" hreflang="sn" data-title="Piri" data-language-autonym="ChiShona" data-language-local-name="绍纳语" class="interlanguage-link-target"><span>ChiShona</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/2_(tiro)" title="2 (tiro) – 索马里语" lang="so" hreflang="so" data-title="2 (tiro)" data-language-autonym="Soomaaliga" data-language-local-name="索马里语" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/2_(num%C3%ABr)" title="2 (numër) – 阿尔巴尼亚语" lang="sq" hreflang="sq" data-title="2 (numër)" data-language-autonym="Shqip" data-language-local-name="阿尔巴尼亚语" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/2_(%D0%B1%D1%80%D0%BE%D1%98)" title="2 (број) – 塞尔维亚语" lang="sr" hreflang="sr" data-title="2 (број)" data-language-autonym="Српски / srpski" data-language-local-name="塞尔维亚语" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-srn mw-list-item"><a href="https://srn.wikipedia.org/wiki/Numro_2" title="Numro 2 – 苏里南汤加语" lang="srn" hreflang="srn" data-title="Numro 2" data-language-autonym="Sranantongo" data-language-local-name="苏里南汤加语" class="interlanguage-link-target"><span>Sranantongo</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/2_(tal)" title="2 (tal) – 瑞典语" lang="sv" hreflang="sv" data-title="2 (tal)" data-language-autonym="Svenska" data-language-local-name="瑞典语" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Mbili" title="Mbili – 斯瓦希里语" lang="sw" hreflang="sw" data-title="Mbili" data-language-autonym="Kiswahili" data-language-local-name="斯瓦希里语" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-szl mw-list-item"><a href="https://szl.wikipedia.org/wiki/2_(n%C5%AFmera)" title="2 (nůmera) – 西里西亚语" lang="szl" hreflang="szl" data-title="2 (nůmera)" data-language-autonym="Ślůnski" data-language-local-name="西里西亚语" class="interlanguage-link-target"><span>Ślůnski</span></a></li><li class="interlanguage-link interwiki-szy mw-list-item"><a href="https://szy.wikipedia.org/wiki/tusa" title="tusa – Sakizaya" lang="szy" hreflang="szy" data-title="tusa" data-language-autonym="Sakizaya" data-language-local-name="Sakizaya" class="interlanguage-link-target"><span>Sakizaya</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/2_(%E0%AE%8E%E0%AE%A3%E0%AF%8D)" title="2 (எண்) – 泰米尔语" lang="ta" hreflang="ta" data-title="2 (எண்)" data-language-autonym="தமிழ்" data-language-local-name="泰米尔语" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%B0%E0%B1%86%E0%B0%82%E0%B0%A1%E0%B1%81" title="రెండు – 泰卢固语" lang="te" hreflang="te" data-title="రెండు" data-language-autonym="తెలుగు" data-language-local-name="泰卢固语" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/2_(%D0%B0%D0%B4%D0%B0%D0%B4)" title="2 (адад) – 塔吉克语" lang="tg" hreflang="tg" data-title="2 (адад)" data-language-autonym="Тоҷикӣ" data-language-local-name="塔吉克语" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/2" title="2 – 泰语" lang="th" hreflang="th" data-title="2" data-language-autonym="ไทย" data-language-local-name="泰语" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-ti mw-list-item"><a href="https://ti.wikipedia.org/wiki/%E1%8A%AD%E1%88%8D%E1%89%B0" title="ክልተ – 提格利尼亚语" lang="ti" hreflang="ti" data-title="ክልተ" data-language-autonym="ትግርኛ" data-language-local-name="提格利尼亚语" class="interlanguage-link-target"><span>ትግርኛ</span></a></li><li class="interlanguage-link interwiki-tk mw-list-item"><a href="https://tk.wikipedia.org/wiki/2_(san)" title="2 (san) – 土库曼语" lang="tk" hreflang="tk" data-title="2 (san)" data-language-autonym="Türkmençe" data-language-local-name="土库曼语" class="interlanguage-link-target"><span>Türkmençe</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/2_(bilang)" title="2 (bilang) – 他加禄语" lang="tl" hreflang="tl" data-title="2 (bilang)" data-language-autonym="Tagalog" data-language-local-name="他加禄语" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/2_(say%C4%B1)" title="2 (sayı) – 土耳其语" lang="tr" hreflang="tr" data-title="2 (sayı)" data-language-autonym="Türkçe" data-language-local-name="土耳其语" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-ts mw-list-item"><a href="https://ts.wikipedia.org/wiki/Mbirhi" title="Mbirhi – 聪加语" lang="ts" hreflang="ts" data-title="Mbirhi" data-language-autonym="Xitsonga" data-language-local-name="聪加语" class="interlanguage-link-target"><span>Xitsonga</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/2_(%D1%81%D0%B0%D0%BD)" title="2 (сан) – 鞑靼语" lang="tt" hreflang="tt" data-title="2 (сан)" data-language-autonym="Татарча / tatarça" data-language-local-name="鞑靼语" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-tum mw-list-item"><a href="https://tum.wikipedia.org/wiki/Vibili" title="Vibili – 通布卡语" lang="tum" hreflang="tum" data-title="Vibili" data-language-autonym="ChiTumbuka" data-language-local-name="通布卡语" class="interlanguage-link-target"><span>ChiTumbuka</span></a></li><li class="interlanguage-link interwiki-tyv mw-list-item"><a href="https://tyv.wikipedia.org/wiki/2" title="2 – 图瓦语" lang="tyv" hreflang="tyv" data-title="2" data-language-autonym="Тыва дыл" data-language-local-name="图瓦语" class="interlanguage-link-target"><span>Тыва дыл</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/2_(%D1%87%D0%B8%D1%81%D0%BB%D0%BE)" title="2 (число) – 乌克兰语" lang="uk" hreflang="uk" data-title="2 (число)" data-language-autonym="Українська" data-language-local-name="乌克兰语" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/2_(%D8%B9%D8%AF%D8%AF)" title="2 (عدد) – 乌尔都语" lang="ur" hreflang="ur" data-title="2 (عدد)" data-language-autonym="اردو" data-language-local-name="乌尔都语" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/2_(son)" title="2 (son) – 乌兹别克语" lang="uz" hreflang="uz" data-title="2 (son)" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="乌兹别克语" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-ve mw-list-item"><a href="https://ve.wikipedia.org/wiki/Mbili" title="Mbili – 文达语" lang="ve" hreflang="ve" data-title="Mbili" data-language-autonym="Tshivenda" data-language-local-name="文达语" class="interlanguage-link-target"><span>Tshivenda</span></a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/2_(lugu)" title="2 (lugu) – 维普森语" lang="vep" hreflang="vep" data-title="2 (lugu)" data-language-autonym="Vepsän kel’" data-language-local-name="维普森语" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/2_(s%E1%BB%91)" title="2 (số) – 越南语" lang="vi" hreflang="vi" data-title="2 (số)" data-language-autonym="Tiếng Việt" data-language-local-name="越南语" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/2_(getal)" title="2 (getal) – 西佛蘭德文" lang="vls" hreflang="vls" data-title="2 (getal)" data-language-autonym="West-Vlams" data-language-local-name="西佛蘭德文" class="interlanguage-link-target"><span>West-Vlams</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/2_(ihap)" title="2 (ihap) – 瓦瑞语" lang="war" hreflang="war" data-title="2 (ihap)" data-language-autonym="Winaray" data-language-local-name="瓦瑞语" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wo mw-list-item"><a href="https://wo.wikipedia.org/wiki/%C3%91aar" title="Ñaar – 沃洛夫语" lang="wo" hreflang="wo" data-title="Ñaar" data-language-autonym="Wolof" data-language-local-name="沃洛夫语" class="interlanguage-link-target"><span>Wolof</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/2" title="2 – 吴语" lang="wuu" hreflang="wuu" data-title="2" data-language-autonym="吴语" data-language-local-name="吴语" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xal mw-list-item"><a href="https://xal.wikipedia.org/wiki/2" title="2 – 卡尔梅克语" lang="xal" hreflang="xal" data-title="2" data-language-autonym="Хальмг" data-language-local-name="卡尔梅克语" class="interlanguage-link-target"><span>Хальмг</span></a></li><li class="interlanguage-link interwiki-xh mw-list-item"><a href="https://xh.wikipedia.org/wiki/Zimbini" title="Zimbini – 科萨语" lang="xh" hreflang="xh" data-title="Zimbini" data-language-autonym="IsiXhosa" data-language-local-name="科萨语" class="interlanguage-link-target"><span>IsiXhosa</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%9F%E1%83%98%E1%83%A0%E1%83%98" title="ჟირი – 明格列爾文" lang="xmf" hreflang="xmf" data-title="ჟირი" data-language-autonym="მარგალური" data-language-local-name="明格列爾文" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/2_(%D7%A0%D7%95%D7%9E%D7%A2%D7%A8)" title="2 (נומער) – 意第绪语" lang="yi" hreflang="yi" data-title="2 (נומער)" data-language-autonym="ייִדיש" data-language-local-name="意第绪语" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-yo mw-list-item"><a href="https://yo.wikipedia.org/wiki/2_(n%E1%BB%8D%CC%81mb%C3%A0)" title="2 (nọ́mbà) – 约鲁巴语" lang="yo" hreflang="yo" data-title="2 (nọ́mbà)" data-language-autonym="Yorùbá" data-language-local-name="约鲁巴语" class="interlanguage-link-target"><span>Yorùbá</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/2" title="2 – 壮语" lang="za" hreflang="za" data-title="2" data-language-autonym="Vahcuengh" data-language-local-name="壮语" class="interlanguage-link-target"><span>Vahcuengh</span></a></li><li class="interlanguage-link interwiki-zgh mw-list-item"><a href="https://zgh.wikipedia.org/wiki/2_(%E2%B4%B0%E2%B5%8E%E2%B4%B9%E2%B4%B0%E2%B5%8F)" title="2 (ⴰⵎⴹⴰⵏ) – 标准摩洛哥塔马塞特语" lang="zgh" hreflang="zgh" data-title="2 (ⴰⵎⴹⴰⵏ)" data-language-autonym="ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ" data-language-local-name="标准摩洛哥塔马塞特语" class="interlanguage-link-target"><span>ⵜⴰⵎⴰⵣⵉⵖⵜ ⵜⴰⵏⴰⵡⴰⵢⵜ</span></a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E4%BA%8C" title="二 – 文言文" lang="lzh" hreflang="lzh" data-title="二" data-language-autonym="文言" data-language-local-name="文言文" class="interlanguage-link-target"><span>文言</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/2" title="2 – 闽南语" lang="nan" hreflang="nan" data-title="2" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="闽南语" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/2" title="2 – 粤语" lang="yue" hreflang="yue" data-title="2" data-language-autonym="粵語" data-language-local-name="粤语" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q200#sitelinks-wikipedia" title="编辑跨语言链接" class="wbc-editpage">编辑链接</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="命名空间"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/2" title="浏览条目正文[c]" accesskey="c"><span>条目</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:2" rel="discussion" title="关于此页面的讨论[t]" accesskey="t"><span>讨论</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown " > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="更改语言变体" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">不转换</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-varlang-0" class="selected ca-variants-zh mw-list-item"><a href="/zh/2" lang="zh" hreflang="zh"><span>不转换</span></a></li><li id="ca-varlang-1" class="ca-variants-zh-Hans mw-list-item"><a href="/zh-hans/2" lang="zh-Hans" hreflang="zh-Hans"><span>简体</span></a></li><li id="ca-varlang-2" class="ca-variants-zh-Hant mw-list-item"><a href="/zh-hant/2" lang="zh-Hant" hreflang="zh-Hant"><span>繁體</span></a></li><li id="ca-varlang-3" class="ca-variants-zh-Hans-CN mw-list-item"><a href="/zh-cn/2" lang="zh-Hans-CN" hreflang="zh-Hans-CN"><span>大陆简体</span></a></li><li id="ca-varlang-4" class="ca-variants-zh-Hant-HK mw-list-item"><a href="/zh-hk/2" lang="zh-Hant-HK" hreflang="zh-Hant-HK"><span>香港繁體</span></a></li><li id="ca-varlang-5" class="ca-variants-zh-Hant-MO mw-list-item"><a href="/zh-mo/2" lang="zh-Hant-MO" hreflang="zh-Hant-MO"><span>澳門繁體</span></a></li><li id="ca-varlang-6" class="ca-variants-zh-Hans-MY mw-list-item"><a href="/zh-my/2" lang="zh-Hans-MY" hreflang="zh-Hans-MY"><span>大马简体</span></a></li><li id="ca-varlang-7" class="ca-variants-zh-Hans-SG mw-list-item"><a href="/zh-sg/2" lang="zh-Hans-SG" hreflang="zh-Hans-SG"><span>新加坡简体</span></a></li><li id="ca-varlang-8" class="ca-variants-zh-Hant-TW mw-list-item"><a href="/zh-tw/2" lang="zh-Hant-TW" hreflang="zh-Hant-TW"><span>臺灣正體</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> 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class="vector-column-end"> <div class="vector-sticky-pinned-container"> <nav class="vector-page-tools-landmark" aria-label="页面工具"> <div id="vector-page-tools-pinned-container" class="vector-pinned-container"> </div> </nav> <nav class="vector-appearance-landmark" aria-label="外观"> <div id="vector-appearance-pinned-container" class="vector-pinned-container"> <div id="vector-appearance" class="vector-appearance vector-pinnable-element"> <div class="vector-pinnable-header vector-appearance-pinnable-header vector-pinnable-header-pinned" data-feature-name="appearance-pinned" data-pinnable-element-id="vector-appearance" data-pinned-container-id="vector-appearance-pinned-container" data-unpinned-container-id="vector-appearance-unpinned-container" > <div class="vector-pinnable-header-label">外观</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">移至侧栏</button> <button 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.mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}html.skin-theme-clientpref-night .mw-parser-output .infobox td div:not(.notheme)[style]{background:transparent!important;color:var(--color-base,#202122)}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox td div:not(.notheme)[style]{background:transparent!important;color:var(--color-base,#202122)}}html.skin-theme-clientpref-night .mw-parser-output .infobox td div.NavHead:not(.notheme)[style]{background:transparent!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox td div.NavHead:not(.notheme)[style]{background:transparent!important}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox" style="line-height: 1.5em"><caption class="infobox-title"><style data-mw-deduplicate="TemplateStyles:r85009877">.mw-parser-output .hvanchor>:target~.hvanchor-text{display:initial}.mw-parser-output .hvanchor>:target~.svanchor-text,.mw-parser-output .hvanchor>:target~.svanchor-text .anchor-high-light,.mw-parser-output .hvanchor>:target~.hvanchor-text .anchor-high-light{background-color:#b1d2ff}.mw-parser-output .hvanchor-text{display:none}.mw-parser-output .hvanchor>:target~.ihvanchor-text{display:none}.mw-parser-output .ihvanchor-text{display:initial}</style><span class="hvanchor"><span class="anchor" id="2資料"></span><span class="anchor" id="2資料"></span><span class="svanchor-text">2</span><span class="hvanchor-text"></span></span></caption><tbody><tr><th colspan="2" class="infobox-above" style="font-size: 150%"><table style="width:100%; margin:0"><tbody><tr> <td style="width:15%; text-align:left; white-space: nowrap; font-size:smaller"><a href="/wiki/1" title="1">← 1 </a></td> <td style="width:70%; padding-left:1em; padding-right:1em; text-align: center;">2</td> <td style="width:15%; text-align:right; white-space: nowrap; font-size:smaller"><a href="/wiki/3" title="3"> 3 →</a></td> </tr></tbody></table></th></tr><tr><td colspan="2" class="infobox-subheader" style="font-size:100%;"><table style="width:100%; margin:0;"><tbody><tr style="align:center;white-space:nowrap;"> <td><a href="/wiki/%E6%95%B0%E8%A1%A8" class="mw-redirect" title="数表">数表</a> — <a href="/wiki/%E6%95%B4%E6%95%B0" title="整数">整数</a> <div style="text−align: center;"> <p><small> <a href="/wiki/%E2%88%921" title="−1"><<</a>  <a href="/wiki/0" title="0">0</a> <a href="/wiki/1" title="1">1</a> <a class="mw-selflink selflink">2</a> <a href="/wiki/3" title="3">3</a> <a href="/wiki/4" title="4">4</a> <a href="/wiki/5" title="5">5</a> <a href="/wiki/6" title="6">6</a> <a href="/wiki/7" title="7">7</a> <a href="/wiki/8" title="8">8</a> <a href="/wiki/9" title="9">9</a> <a href="/wiki/10" title="10">>></a> </small> </p> </div></td> </tr></tbody></table></td></tr><tr><th colspan="2" class="infobox-header" style="">命名</th></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E4%B8%AD%E6%96%87%E6%95%B8%E5%AD%97" class="mw-redirect" title="中文數字">小寫</a></th><td class="infobox-data" style="">二</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E4%B8%AD%E6%96%87%E6%95%B8%E5%AD%97" class="mw-redirect" title="中文數字">大寫</a></th><td class="infobox-data" style=""><a href="/wiki/%E8%B4%B0" class="mw-redirect" title="贰">贰</a></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%BA%8F%E6%95%B8%E8%A9%9E" title="序數詞">序數詞</a></th><td class="infobox-data" style="">第二<br />second</td></tr><tr><th colspan="2" class="infobox-header" style="">識別</th></tr><tr><th scope="row" class="infobox-label" style="">種類</th><td class="infobox-data" style="">整數</td></tr><tr><th colspan="2" class="infobox-header" style="">性質</th></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E8%B3%AA%E6%95%B8" class="mw-redirect" title="質數">質數</a></th><td class="infobox-data" style="">第一個<br />(首個) - <b>2</b> - <a href="/wiki/3" title="3">3</a></td></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap"><a href="/wiki/%E8%B3%AA%E5%9B%A0%E6%95%B8%E5%88%86%E8%A7%A3" class="mw-redirect" title="質因數分解">質因數分解</a></span></th><td class="infobox-data" style="">（<a href="/wiki/%E7%B4%A0%E6%95%B0" class="mw-redirect" title="素数">素数</a>）</td></tr><tr><th scope="row" class="infobox-label" style=""><span class="nowrap"><a href="/wiki/%E9%AB%98%E6%96%AF%E6%95%B4%E6%95%B8%E5%88%86%E8%A7%A3" class="mw-redirect" title="高斯整數分解">高斯整數分解</a></span></th><td class="infobox-data" style=""><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle -i\times \left(1+i\right)^{2}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>−</mo> <mi>i</mi> <mo>×</mo> <msup> <mrow> <mo>(</mo> <mrow> <mn>1</mn> <mo>+</mo> <mi>i</mi> </mrow> <mo>)</mo> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle -i\times \left(1+i\right)^{2}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/09b2805132efeb93e3ac8bea0a2a03b5c4e88541" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:13.12ex; height:3.343ex;" alt="{\displaystyle -i\times \left(1+i\right)^{2}}"></span><br />或<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle \left(1+i\right)\left(1-i\right)}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow> <mo>(</mo> <mrow> <mn>1</mn> <mo>+</mo> <mi>i</mi> </mrow> <mo>)</mo> </mrow> <mrow> <mo>(</mo> <mrow> <mn>1</mn> <mo>−</mo> <mi>i</mi> </mrow> <mo>)</mo> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle \left(1+i\right)\left(1-i\right)}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/31c40b2049e25ea2947e413915ad51ef496d7bf6" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:13.616ex; height:2.843ex;" alt="{\displaystyle \left(1+i\right)\left(1-i\right)}"></span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%9B%A0%E6%95%B8" title="因數">因數</a></th><td class="infobox-data" style="">1、2</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E7%9B%B8%E5%8F%8D%E6%95%B0" class="mw-redirect" title="相反数">相反数</a></th><td class="infobox-data" style=""><a href="/wiki/%E2%88%922" title="−2">−2</a></td></tr><tr><th colspan="2" class="infobox-header" style="">表示方式</th></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E8%BF%9B%E4%BD%8D%E5%88%B6" title="进位制">进位制</a></th><td class="infobox-data" style=""><a href="/wiki/%E4%BA%8C%E8%BF%9B%E5%88%B6" title="二进制">二进制</a></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%80%BC" title="值">值</a></th><td class="infobox-data" style="">2</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E7%AE%97%E7%AD%B9" title="算筹">算筹</a></th><td class="infobox-data" style=""><span class="mw-default-size" typeof="mw:File"><a href="/wiki/File:Counting_rod_v2.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/f/ff/Counting_rod_v2.png" decoding="async" width="13" height="29" class="mw-file-element" data-file-width="13" data-file-height="29" /></a></span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%B8%8C%E8%85%8A%E6%95%B0%E5%AD%97" title="希腊数字">希腊数字</a></th><td class="infobox-data" style=""><span lang="el">Β´ </span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E7%BE%85%E9%A6%AC%E6%95%B8%E5%AD%97" class="mw-redirect" title="羅馬數字">羅馬數字</a></th><td class="infobox-data" style=""><style data-mw-deduplicate="TemplateStyles:r75010853">.mw-parser-output .roman-numeral{font-family:"Nimbus Roman No9 L","Times New Roman",Times,serif;font-size:118%;line-height:1}.mw-parser-output .roman-numeral-a{border:1px solid}.mw-parser-output .roman-numeral-t{border-top:1px solid}.mw-parser-output .roman-numeral-v{border:solid;border-width:0 1px;padding:0 2px}.mw-parser-output .roman-numeral-h{border:solid;border-width:1px 0}.mw-parser-output .roman-numeral-tv{border:1px solid;border-bottom:none;padding:0 2px}</style><span class="roman-numeral" title="Roman numeral">Ⅱ</span></td></tr><tr><td colspan="2" class="infobox-full-data" style=""></td></tr><tr><th><a href="/wiki/%E6%91%A9%E5%B0%94%E6%96%AF%E7%94%B5%E7%A0%81" title="摩尔斯电码">摩尔斯电码</a></th><td>..---<span style="float:right"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q200?uselang=zh#Q200$a681eed7-47ab-18f3-23e1-d94040645c63" title="在维基数据编辑"><img alt="在维基数据编辑" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th><a href="/wiki/%E5%B7%B4%E6%AF%94%E4%BC%A6%E6%95%B0%E5%AD%97" title="巴比伦数字">巴比伦数字</a></th><td>𒐖<span style="float:right"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q200?uselang=zh#Q200$ddeeb743-425a-c00f-a8b3-f4b5970b6ed3" title="在维基数据编辑"><img alt="在维基数据编辑" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr><th><a href="/wiki/%E7%8E%9B%E9%9B%85%E6%95%B0%E5%AD%97" title="玛雅数字">玛雅数字</a></th><td><span typeof="mw:File"><a href="/wiki/File:Maya_2.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Maya_2.svg/30px-Maya_2.svg.png" decoding="async" width="30" height="30" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Maya_2.svg/45px-Maya_2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5f/Maya_2.svg/60px-Maya_2.svg.png 2x" data-file-width="450" data-file-height="450" /></a></span><span style="float:right"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q200?uselang=zh#Q200$4D463684-075E-41FE-9CEC-8DA2A7E1F66E" title="在维基数据编辑"><img alt="在维基数据编辑" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><td colspan="2" class="infobox-full-data" style=""></td></tr><tr><th><a href="/wiki/%E4%B8%80%E8%BF%9B%E5%88%B6" title="一进制">一进制</a></th><td>11<sub>(1)</sub></td></tr><tr><th><a href="/wiki/%E4%BA%8C%E8%BF%9B%E5%88%B6" title="二进制">二进制</a></th><td>10<sub>(2)</sub></td></tr><tr><th><a href="/wiki/%E4%B8%89%E8%BF%9B%E5%88%B6" title="三进制">三进制</a></th><td>2<sub>(3)</sub></td></tr><tr><th><a href="/wiki/%E5%9B%9B%E8%BF%9B%E5%88%B6" class="mw-redirect" title="四进制">四进制</a></th><td>2<sub>(4)</sub></td></tr><tr><th><a href="/wiki/%E4%BA%94%E9%80%B2%E5%88%B6" title="五進制">五进制</a></th><td>2<sub>(5)</sub></td></tr><tr><th><a href="/wiki/%E5%85%AB%E8%BF%9B%E5%88%B6" title="八进制">八进制</a></th><td>2<sub>(8)</sub></td></tr><tr><th><a href="/wiki/%E5%8D%81%E4%BA%8C%E8%BF%9B%E5%88%B6" title="十二进制">十二进制</a></th><td>2<sub>(12)</sub></td></tr><tr><th><a href="/wiki/%E5%8D%81%E5%85%AD%E8%BF%9B%E5%88%B6" title="十六进制">十六进制</a></th><td>2<sub>(16)</sub></td></tr><tr style="display:none"><td colspan="2"> </td></tr><tr><th colspan="2" class="infobox-header" style="">語言</th></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%B8%8C%E8%85%8A%E8%AF%AD" title="希腊语">希腊语</a><a href="/wiki/%E6%95%B0%E5%AD%97%E5%89%8D%E7%BC%80" title="数字前缀">前缀</a></th><td class="infobox-data" style=""><a href="https://en.wiktionary.org/wiki/di-" class="extiw" title="wiktionary:di-">di-</a></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E6%8B%89%E4%B8%81%E8%AA%9E" class="mw-redirect" title="拉丁語">拉丁語</a><a href="/wiki/%E6%95%B0%E5%AD%97%E5%89%8D%E7%BC%80" title="数字前缀">前缀</a></th><td class="infobox-data" style=""><a href="https://en.wiktionary.org/wiki/duo-" class="extiw" title="wiktionary:duo-">duo-</a>/<a href="https://en.wiktionary.org/wiki/bi-" class="extiw" title="wiktionary:bi-">bi-</a></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%8F%A4%E8%8B%B1%E8%AF%AD" title="古英语">古英语</a><a href="/wiki/%E6%95%B0%E5%AD%97%E5%89%8D%E7%BC%80" title="数字前缀">前缀</a></th><td class="infobox-data" style=""><a href="https://en.wiktionary.org/wiki/twi-" class="extiw" title="wiktionary:twi-">twi-</a></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E8%8B%B1%E8%AA%9E" class="mw-redirect" title="英語">英語</a></th><td class="infobox-data" style="">two</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E9%98%BF%E6%8B%89%E4%BC%AF%E6%96%87%E6%95%B0%E5%AD%97" title="阿拉伯文数字">阿拉伯文</a>、 <a href="/wiki/%E4%B8%AD%E5%BA%93%E5%B0%94%E5%BE%B7%E8%AF%AD" title="中库尔德语">中库尔德语</a>、 <a href="/wiki/%E6%B3%A2%E6%96%AF%E8%AF%AD" title="波斯语">波斯语</a>、 <a href="/wiki/%E4%BF%A1%E5%BE%B7%E8%AF%AD" title="信德语">信德语</a>、 <span class="ilh-all" data-orig-title="印度斯坦數字" data-lang-code="en" data-lang-name="英语" data-foreign-title="Urdu numerals"><span class="ilh-page"><a href="/w/index.php?title=%E5%8D%B0%E5%BA%A6%E6%96%AF%E5%9D%A6%E6%95%B8%E5%AD%97&action=edit&redlink=1" class="new" title="印度斯坦數字（页面不存在）">印度斯坦语</a></span><span class="noprint ilh-comment">（<span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Urdu_numerals" class="extiw" title="en:Urdu numerals"><span lang="en" dir="auto">Urdu numerals</span></a></span>）</span></span></th><td class="infobox-data" style=""><span style="font-size:150%;">٢</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%90%89%E8%8C%B2%E5%AD%97%E6%AF%8D" title="吉茲字母">吉茲</a></th><td class="infobox-data" style="">፪</td></tr><tr><th scope="row" class="infobox-label" style=""><span class="ilh-all" data-orig-title="孟加拉语数字" data-lang-code="en" data-lang-name="英语" data-foreign-title="Bengali numerals"><span class="ilh-page"><a href="/w/index.php?title=%E5%AD%9F%E5%8A%A0%E6%8B%89%E8%AF%AD%E6%95%B0%E5%AD%97&action=edit&redlink=1" class="new" title="孟加拉语数字（页面不存在）">孟加拉语</a></span><span class="noprint ilh-comment">（<span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Bengali_numerals" class="extiw" title="en:Bengali numerals"><span lang="en" dir="auto">Bengali numerals</span></a></span>）</span></span></th><td class="infobox-data" style=""><span style="font-size:150%;">২</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E6%BC%A2%E8%AA%9E" class="mw-redirect" title="漢語">漢語</a></th><td class="infobox-data" style="">二，弍，貳</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%A4%A9%E5%9F%8E%E6%96%87" title="天城文">天城文</a></th><td class="infobox-data" style=""><span style="font-size:150%;">२</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E6%B3%B0%E5%8D%A2%E5%9B%BA%E8%AF%AD" title="泰卢固语">泰卢固语</a></th><td class="infobox-data" style=""><span style="font-size:150%;">౨</span></td></tr><tr><th scope="row" class="infobox-label" style=""><span class="ilh-all" data-orig-title="泰米尔语数字" data-lang-code="en" data-lang-name="英语" data-foreign-title="Tamil numerals"><span class="ilh-page"><a href="/w/index.php?title=%E6%B3%B0%E7%B1%B3%E5%B0%94%E8%AF%AD%E6%95%B0%E5%AD%97&action=edit&redlink=1" class="new" title="泰米尔语数字（页面不存在）">泰米尔语</a></span><span class="noprint ilh-comment">（<span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Tamil_numerals" class="extiw" title="en:Tamil numerals"><span lang="en" dir="auto">Tamil numerals</span></a></span>）</span></span></th><td class="infobox-data" style=""><span style="font-size:150%;">௨</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%8D%A1%E7%B4%8D%E9%81%94%E6%96%87" title="卡納達文">卡納達文</a></th><td class="infobox-data" style=""><span style="font-size:150%;">೨</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E5%B8%8C%E4%BC%AF%E4%BE%86%E6%95%B8%E5%AD%97" title="希伯來數字">希伯來文</a></th><td class="infobox-data" style=""><span style="font-size:150%;">ב</span></td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E9%AB%98%E6%A3%89%E6%95%B8%E5%AD%97" title="高棉數字">高棉語</a></th><td class="infobox-data" style="">២</td></tr><tr><th scope="row" class="infobox-label" style=""><a href="/wiki/%E6%B3%B0%E6%96%87%E6%95%B0%E5%AD%97" title="泰文数字">泰文</a></th><td class="infobox-data" style="">๒</td></tr><tr><th scope="row" class="infobox-label" style=""><span class="ilh-all" data-orig-title="格鲁吉亚语数字" data-lang-code="en" data-lang-name="英语" data-foreign-title="Georgian numerals"><span class="ilh-page"><a href="/w/index.php?title=%E6%A0%BC%E9%B2%81%E5%90%89%E4%BA%9A%E8%AF%AD%E6%95%B0%E5%AD%97&action=edit&redlink=1" class="new" title="格鲁吉亚语数字（页面不存在）">格鲁吉亚语</a></span><span class="noprint ilh-comment">（<span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Georgian_numerals" class="extiw" title="en:Georgian numerals"><span lang="en" dir="auto">Georgian numerals</span></a></span>）</span></span></th><td class="infobox-data" style=""><span style="font-size:130%;"> Ⴁ/ⴁ/ბ</span>(<a href="/w/index.php?title=Bani_(letter)&action=edit&redlink=1" class="new" title="Bani (letter)（页面不存在）">Bani</a>)</td></tr><tr><th scope="row" class="infobox-label" style=""><span class="ilh-all" data-orig-title="马拉雅拉姆语数字" data-lang-code="en" data-lang-name="英语" data-foreign-title="Malayalam numerals"><span class="ilh-page"><a href="/w/index.php?title=%E9%A9%AC%E6%8B%89%E9%9B%85%E6%8B%89%E5%A7%86%E8%AF%AD%E6%95%B0%E5%AD%97&action=edit&redlink=1" class="new" title="马拉雅拉姆语数字（页面不存在）">马拉雅拉姆语</a></span><span class="noprint ilh-comment">（<span class="ilh-lang">英语</span><span class="ilh-colon">：</span><span class="ilh-link"><a href="https://en.wikipedia.org/wiki/Malayalam_numerals" class="extiw" title="en:Malayalam numerals"><span lang="en" dir="auto">Malayalam numerals</span></a></span>）</span></span></th><td class="infobox-data" style="">൨</td></tr><tr><td colspan="2" class="infobox-navbar"><style data-mw-deduplicate="TemplateStyles:r84265675">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist ul ul{display:inline}.mw-parser-output .hlist .mw-empty-li{display:none}.mw-parser-output .hlist dt::after{content:" :"}.mw-parser-output .hlist dd::after,.mw-parser-output .hlist li::after{content:" · ";font-weight:bold}.mw-parser-output .hlist-pipe dd::after,.mw-parser-output .hlist-pipe 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li{margin:0;display:inline-block}.mw-parser-output .cslist li::after{content:"，"}.mw-parser-output .sslist li::after{content:"；"}.mw-parser-output .cslist li:last-child::after,.mw-parser-output .sslist li:last-child::after{content:none}</style><style data-mw-deduplicate="TemplateStyles:r84244141">.mw-parser-output .navbar{display:inline;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:110%;margin:0 8em}.mw-parser-output .navbar-ct-mini{font-size:110%;margin:0 5em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:%E6%95%B4%E6%95%B0" title="Template:整数"><abbr title="查看该模板">查</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:%E6%95%B4%E6%95%B0" title="Template talk:整数"><abbr title="讨论该模板">论</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:%E7%BC%96%E8%BE%91%E9%A1%B5%E9%9D%A2/Template:%E6%95%B4%E6%95%B0" title="Special:编辑页面/Template:整数"><abbr title="编辑该模板">编</abbr></a></li></ul></div></td></tr></tbody></table> <table class="infobox" style="text-align:center;"> <tbody><tr> <th colspan="7" style="font-size:small;">高斯整數導航<style data-mw-deduplicate="TemplateStyles:r58896141">.mw-parser-output .serif{font-family:Times,serif}</style><span class="serif"><span class="texhtml"></span></span> </th></tr> <tr> <td></td> <td></td> <td></td> <td><a href="/wiki/%E8%99%9B%E6%95%B8" class="mw-redirect" title="虛數">↑</a></td> <td></td> <td></td> <td> </td></tr> <tr> <td></td> <td></td> <td></td> <td><a href="/wiki/2i" title="2i"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141"><span class="serif"><span class="texhtml">2<i>i</i></span></span></a></td> <td></td> <td></td> <td> </td></tr> <tr> <td></td> <td></td> <td><a href="/wiki/%E2%88%921%2Bi" class="mw-redirect" title="−1+i"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141"><span class="serif"><span class="texhtml">−1+<i>i</i></span></span></a></td> <td><a href="/wiki/%E8%99%9B%E6%95%B8%E5%96%AE%E4%BD%8D" title="虛數單位"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141"><span class="serif"><span class="texhtml"><i>i</i></span></span></a></td> <td><a href="/wiki/1%2Bi" class="mw-redirect" title="1+i"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141"><span class="serif"><span class="texhtml">1+<i>i</i></span></span></a></td> <td></td> <td> </td></tr> <tr> <td><a href="/wiki/%E2%88%923" title="−3">←</a></td> <td><a href="/wiki/%E2%88%922" title="−2">−2</a></td> <td><a href="/wiki/%E2%88%921" title="−1">−1</a></td> <td><a href="/wiki/0" title="0">0</a></td> <td><a href="/wiki/1" title="1">1</a></td> <td><a class="mw-selflink selflink">2</a></td> <td><a href="/wiki/3" title="3">→</a> </td></tr> <tr> <td></td> <td></td> <td><a href="/wiki/-1-i" class="mw-redirect" title="-1-i"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141"><span class="serif"><span class="texhtml">−1−<i>i</i></span></span></a></td> <td><a href="/wiki/%E2%88%92i" class="mw-redirect" title="−i"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141"><span class="serif"><span class="texhtml">−<i>i</i></span></span></a></td> <td><a href="/wiki/1-i" class="mw-redirect" title="1-i"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141"><span class="serif"><span class="texhtml">1−<i>i</i></span></span></a></td> <td></td> <td> </td></tr> <tr> <td></td> <td></td> <td></td> <td><a href="/wiki/%E2%88%922i" class="mw-redirect" title="−2i"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r58896141"><span class="serif"><span class="texhtml">−2<i>i</i></span></span></a></td> <td></td> <td></td> <td> </td></tr> <tr> <td></td> <td></td> <td></td> <td><a href="/wiki/%E8%99%9B%E6%95%B8" class="mw-redirect" title="虛數">↓</a></td> <td></td> <td></td> <td> </td></tr></tbody></table> <p><b>2</b>（二）是<a href="/wiki/1" title="1">1</a>与<a href="/wiki/3" title="3">3</a>之间的<a href="/wiki/%E8%87%AA%E7%84%B6%E6%95%B0" title="自然数">自然数</a>，2是唯一的<a href="/wiki/%E5%81%B6%E6%95%B0" class="mw-redirect" title="偶数">偶數</a><a href="/wiki/%E8%B3%AA%E6%95%B8" class="mw-redirect" title="質數">質數</a> （又稱偶素數）。 </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="在数学中"><span id=".E5.9C.A8.E6.95.B0.E5.AD.A6.E4.B8.AD"></span>在数学中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=1" title="编辑章节：在数学中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%E5%81%B6%E6%95%B0" class="mw-redirect" title="偶数">偶数</a> <dl><dd>如果一个<a href="/wiki/%E6%95%B4%E6%95%B0" title="整数">整数</a>能被2<a href="/wiki/%E6%95%B4%E9%99%A4" class="mw-redirect" title="整除">整除</a>，就叫做<a href="/wiki/%E5%81%B6%E6%95%B0" class="mw-redirect" title="偶数">偶数</a>。反過來說，任何數<a href="/wiki/%E4%B9%98" class="mw-redirect" title="乘">乘</a>以2即為<a href="/wiki/%E5%81%B6%E6%95%B0" class="mw-redirect" title="偶数">偶數</a>。对于用偶数进制书写的整数，例如<a href="/wiki/%E5%8D%81%E9%80%B2%E5%88%B6" class="mw-redirect" title="十進制">十進制</a>和<a href="/wiki/%E5%8D%81%E5%85%AD%E9%80%B2%E5%88%B6" class="mw-redirect" title="十六進制">十六進制</a>，要判断它是否为偶数，只需判断最后一位是否为偶数，而2進位則只需判断最后一位是否为0。</dd></dl></li></ul> <ul><li>第1個<a href="/wiki/%E7%B4%A0%E6%95%B0" class="mw-redirect" title="素数">質數</a>。下一個為<a href="/wiki/3" title="3">3</a>。 <ul><li>唯一的<a href="/wiki/%E5%81%B6%E6%95%B0" class="mw-redirect" title="偶数">偶数</a><a href="/wiki/%E7%B4%A0%E6%95%B0" class="mw-redirect" title="素数">素数</a>。</li> <li>唯一一組相差為1的質數對之一，其為（2、 <a href="/wiki/3" title="3">3</a>）。</li> <li>第一个<a href="/wiki/%E9%98%B6%E4%B9%98%E7%B4%A0%E6%95%B0" title="阶乘素数">阶乘素数</a>（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 1!+1}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>1</mn> <mo>!</mo> <mo>+</mo> <mn>1</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 1!+1}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/08991137559ad7d688fd1072b58aaf67e8ec317f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:5.812ex; height:2.343ex;" alt="{\displaystyle 1!+1}"></span>）。下一個是<a href="/wiki/3" title="3">3</a>。</li> <li>第一個<a href="/wiki/%E5%8D%B1%E9%9A%AA%E8%B3%AA%E6%95%B8" class="mw-redirect" title="危險質數">危險質數</a>。下一個是<a href="/wiki/3" title="3">3</a>。</li> <li>第一個<a href="/wiki/Smarandache%E2%80%93Wellin%E7%B4%A0%E6%95%B8" title="Smarandache–Wellin素數">Smarandache–Wellin素數</a></li> <li><a href="/wiki/%E5%8D%81%E9%80%B2%E5%88%B6" class="mw-redirect" title="十進制">十進制</a>下，既是<a href="/wiki/%E5%8F%AF%E6%88%AA%E7%9F%AD%E8%B3%AA%E6%95%B8" title="可截短質數">可右截短質數</a>，也是可左截短質數</li> <li>十進制下的<a href="/wiki/%E5%8F%AF%E4%BA%A4%E6%8D%A2%E7%B4%A0%E6%95%B0" title="可交换素数">可交换素数</a></li> <li>此數字雖然是<a href="/wiki/%E8%87%AA%E7%84%B6%E6%95%B8" class="mw-redirect" title="自然數">自然</a><a href="/wiki/%E8%B3%AA%E6%95%B8" class="mw-redirect" title="質數">質數</a>（<a href="/wiki/%E5%AF%A6%E8%B3%AA%E6%95%B8" class="mw-redirect" title="實質數">實質數</a>），但不是<a href="/wiki/%E9%AB%98%E6%96%AF%E8%B3%AA%E6%95%B8" class="mw-redirect" title="高斯質數">高斯質數</a>。</li></ul> <dl><dd>其<a href="/wiki/%E7%AC%AC%E4%B8%80%E8%B1%A1%E9%99%90" class="mw-redirect" title="第一象限">第一象限</a>之<a href="/wiki/%E9%AB%98%E6%96%AF%E6%95%B4%E6%95%B8#作为唯一分解整环" title="高斯整數">高斯質數</a>的<a href="/wiki/%E6%95%B4%E6%95%B0%E5%88%86%E8%A7%A3" title="整数分解">整数分解</a>為<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle -i\times \left(1+i\right)^{2}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mo>−</mo> <mi>i</mi> <mo>×</mo> <msup> <mrow> <mo>(</mo> <mrow> <mn>1</mn> <mo>+</mo> <mi>i</mi> </mrow> <mo>)</mo> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle -i\times \left(1+i\right)^{2}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/09b2805132efeb93e3ac8bea0a2a03b5c4e88541" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:13.12ex; height:3.343ex;" alt="{\displaystyle -i\times \left(1+i\right)^{2}}"></span>。 <ul><li>2是第一個有此性質的自然質數。下一個是<a href="/wiki/5" title="5">5</a>。（<a href="/wiki/%E6%95%B4%E6%95%B8%E6%95%B8%E5%88%97%E7%B7%9A%E4%B8%8A%E5%A4%A7%E5%85%A8" title="整數數列線上大全">OEIS</a>數列<a href="//oeis.org/A002313" class="extiw" title="oeis:A002313">A002313</a>）</li></ul></dd></dl></li> <li>第2個<a href="/wiki/%E4%BA%8F%E6%95%B0" title="亏数">虧數</a>，<a href="/wiki/%E7%9C%9F%E5%9B%A0%E6%95%B8%E5%92%8C" title="真因數和">真因數和</a>為1，虧度為1。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/3" title="3">3</a>。</li> <li>第2個<a href="/wiki/%E9%AB%98%E5%90%88%E6%88%90%E6%95%B0" title="高合成数">高合成數</a>。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/4" title="4">4</a>。</li> <li>第1個<a href="/wiki/%E4%B8%8D%E5%B0%8B%E5%B8%B8%E6%95%B8" title="不尋常數">不尋常數</a>，大於平方根的質因數為2。下一個為<a href="/wiki/3" title="3">3</a>。</li> <li>第2個<a href="/wiki/%E6%97%A0%E5%B9%B3%E6%96%B9%E6%95%B0%E5%9B%A0%E6%95%B0%E7%9A%84%E6%95%B0" class="mw-redirect" title="无平方数因数的数">無平方數因數的數</a>。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/3" title="3">3</a>。</li> <li>第2個<a href="/wiki/%E6%99%AE%E6%B4%9B%E5%B0%BC%E5%85%8B%E6%95%B0" title="普洛尼克数">普洛尼克數</a>，為1與2的乘積。前一個為<a href="/wiki/0" title="0">0</a>、下一個為<a href="/wiki/6" title="6">6</a>。此外，2也是<a href="/wiki/%E6%99%AE%E6%B4%9B%E5%B0%BC%E5%85%8B%E6%95%B0" title="普洛尼克数">普洛尼克數</a>中唯一的<a href="/wiki/%E8%B3%AA%E6%95%B8" class="mw-redirect" title="質數">質數</a>。</li> <li>第2個<a href="/wiki/%E4%BD%A9%E5%B0%94%E6%95%B0" title="佩尔数">佩爾數</a>。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/5" title="5">5</a>。</li> <li>第3個<a href="/wiki/%E6%96%90%E6%B3%A2%E9%82%A3%E5%A5%91%E6%95%B0%E5%88%97" class="mw-redirect" title="斐波那契数列">斐波那契數</a>。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/3" title="3">3</a>。</li> <li>2的<a href="/wiki/%E9%9A%8E%E4%B9%98" title="階乘">階乘</a>。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/6" title="6">6</a>。</li> <li>第1個<a href="/wiki/%E8%B3%AA%E6%95%B8%E9%9A%8E%E4%B9%98" title="質數階乘">質數階乘</a>，即前1個質數的乘積。下一個為<a href="/wiki/6" title="6">6</a>。</li> <li>第2個<a href="/wiki/%E5%8D%81%E8%BF%9B%E5%88%B6" title="十进制">十进制</a>的<a href="/wiki/%E5%93%88%E6%B2%99%E5%BE%B7%E6%95%B8" title="哈沙德數">哈沙德數</a>。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/3" title="3">3</a>。 <ul><li>第2個<a href="/wiki/%E5%93%88%E6%B2%99%E5%BE%B7%E6%95%B8" title="哈沙德數">全哈沙德數</a>，即在所有<a href="/wiki/%E8%BF%9B%E4%BD%8D%E5%88%B6" title="进位制">进位制</a>中皆為<a href="/wiki/%E5%93%88%E6%B2%99%E5%BE%B7%E6%95%B8" title="哈沙德數">哈沙德數</a>。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/4" title="4">4</a>。</li></ul></li> <li>第2個<a href="/wiki/%E5%8D%81%E8%BF%9B%E5%88%B6" title="十进制">十进制</a>的<a href="/wiki/%E7%AD%89%E6%95%B8%E4%BD%8D%E6%95%B8" title="等數位數">等數位數</a>。前一個為<a href="/wiki/1" title="1">1</a>、下一個為<a href="/wiki/3" title="3">3</a>。</li> <li>第1個<a href="/wiki/%E4%B8%8D%E5%8F%AF%E5%8F%8A%E6%95%B0" title="不可及数">不可及數</a>。下一個為<a href="/wiki/5" title="5">5</a>。</li> <li><a href="/wiki/%E8%A5%BF%E7%88%BE%E7%B6%AD%E6%96%AF%E7%89%B9%E6%95%B8%E5%88%97" title="西爾維斯特數列">西爾維斯特數列</a>的第一項</li> <li><a href="/wiki/%E4%BD%A9%E8%98%AD%E6%95%B8%E5%88%97" title="佩蘭數列">佩蘭數列</a>的第三項和第五項</li> <li><a href="/wiki/%E5%B7%B4%E9%83%BD%E8%90%AC%E6%95%B8%E5%88%97" title="巴都萬數列">巴都萬數列</a>的第四項和第五項</li> <li>第一個<a href="/wiki/%E7%9A%84%E5%A3%AB%E6%95%B8" title="的士數">的士數</a></li> <li>第二個<a href="/wiki/%E5%8E%9F%E5%A7%8B%E6%95%B8" title="原始數">原始數</a></li> <li>对于任意数<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle n}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>n</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle n}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/a601995d55609f2d9f5e233e36fbe9ea26011b3b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:1.395ex; height:1.676ex;" alt="{\displaystyle n}"></span>：</li></ul> <dl><dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle n+n=2\cdot n}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>n</mi> <mo>+</mo> <mi>n</mi> <mo>=</mo> <mn>2</mn> <mo>⋅</mo> <mi>n</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle n+n=2\cdot n}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/9b882f6b307fbedb2f334ee924d6eb5481fb2976" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:12.965ex; height:2.343ex;" alt="{\displaystyle n+n=2\cdot n}"></span>，<a href="/wiki/%E5%8A%A0%E6%B3%95" title="加法">加法</a>变成<a href="/wiki/%E4%B9%98%E6%B3%95" title="乘法">乘法</a></dd> <dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle n\cdot n=n^{2}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>n</mi> <mo>⋅</mo> <mi>n</mi> <mo>=</mo> <msup> <mi>n</mi> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle n\cdot n=n^{2}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/3b5745b7206b47f36ad61dfa251e1d72ddcfcbbd" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:10.016ex; height:2.676ex;" alt="{\displaystyle n\cdot n=n^{2}}"></span>，<a href="/wiki/%E4%B9%98%E6%B3%95" title="乘法">乘法</a>变成了<a href="/wiki/%E5%B9%82" class="mw-redirect" title="幂">幂</a></dd> <dd><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle n^{n}=n[4]2}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mi>n</mi> <mrow class="MJX-TeXAtom-ORD"> <mi>n</mi> </mrow> </msup> <mo>=</mo> <mi>n</mi> <mo stretchy="false">[</mo> <mn>4</mn> <mo stretchy="false">]</mo> <mn>2</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle n^{n}=n[4]2}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/e27c0d1ecda6d8006ae30b7c9f5de883faebbf9c" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.838ex; width:10.725ex; height:2.843ex;" alt="{\displaystyle n^{n}=n[4]2}"></span>，<a href="/wiki/%E5%B9%82" class="mw-redirect" title="幂">幂</a>变成了<a href="/wiki/%E8%BF%AD%E4%BB%A3%E5%86%AA%E6%AC%A1" title="迭代冪次">迭代冪次</a></dd></dl> <ul><li>最小的<a href="/wiki/%E5%9F%9F_(%E6%95%B0%E5%AD%A6)" title="域 (数学)">体</a>有两个元素。</li> <li><a href="/wiki/%E6%AC%A7%E6%8B%89-%E7%AC%9B%E5%8D%A1%E5%B0%94%E5%85%AC%E5%BC%8F" class="mw-redirect" title="欧拉-笛卡尔公式">歐拉-笛卡爾公式</a>：對任意<a href="/wiki/%E5%87%B8%E5%A4%9A%E9%9D%A2%E9%AB%94" title="凸多面體">凸多面體</a>，<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle V-E+F=2}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>V</mi> <mo>−</mo> <mi>E</mi> <mo>+</mo> <mi>F</mi> <mo>=</mo> <mn>2</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle V-E+F=2}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/759601e482258ff7a359a7db381abf60372c5b06" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.505ex; width:15.245ex; height:2.343ex;" alt="{\displaystyle V-E+F=2}"></span>，其中V, E和F分別是點、邊和面的個數。</li> <li><a href="/wiki/2%E7%9A%84%E5%B9%B3%E6%96%B9%E6%A0%B9" class="mw-redirect" title="2的平方根">2的平方根</a>（<span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {\sqrt {2}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msqrt> <mn>2</mn> </msqrt> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {\sqrt {2}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/b4afc1e27d418021bf10898eb44a7f5f315735ff" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.671ex; width:3.098ex; height:3.009ex;" alt="{\displaystyle {\sqrt {2}}}"></span>）是最早被发现的<a href="/wiki/%E6%97%A0%E7%90%86%E6%95%B0" class="mw-redirect" title="无理数">无理数</a>，其值約為1.414213562373（<a href="/wiki/%E6%95%B4%E6%95%B8%E6%95%B8%E5%88%97%E7%B7%9A%E4%B8%8A%E5%A4%A7%E5%85%A8" title="整數數列線上大全">OEIS</a>數列<a href="//oeis.org/A002193" class="extiw" title="oeis:A002193">A002193</a>）。</li></ul> <div class="mw-heading mw-heading3"><h3 id="基本运算"><span id=".E5.9F.BA.E6.9C.AC.E8.BF.90.E7.AE.97"></span>基本运算</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=2" title="编辑章节：基本运算"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable"> <tbody><tr> <th><a href="/wiki/%E4%B9%98%E6%B3%95" title="乘法">乘法</a> </th> <th>1 </th> <th>2 </th> <th>3 </th> <th>4 </th> <th>5 </th> <th>6 </th> <th>7 </th> <th>8 </th> <th>9 </th> <th>10 </th> <th style="width:5px;"> </th> <th>11 </th> <th>12 </th> <th>13 </th> <th>14 </th> <th>15 </th> <th>16 </th> <th>17 </th> <th>18 </th> <th>19 </th> <th>20 </th> <th style="width:5px;"> </th> <th>21 </th> <th>22 </th> <th>23 </th> <th>24 </th> <th>25 </th> <th style="width:5px;"> </th> <th>30 </th> <th>50 </th> <th>100 </th> <th>1000 </th></tr> <tr> <th><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{2}\times {x}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mo>×</mo> <mrow class="MJX-TeXAtom-ORD"> <mi>x</mi> </mrow> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{2}\times {x}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6af87f208e6190387dc2466645d37065c7d339b2" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:5.333ex; height:2.176ex;" alt="{\displaystyle {{2}\times {x}}}"></span> </th> <td><a class="mw-selflink selflink">2</a> </td> <td><a href="/wiki/4" title="4">4</a> </td> <td><a href="/wiki/6" title="6">6</a> </td> <td><a href="/wiki/8" title="8">8</a> </td> <td><a href="/wiki/10" title="10">10</a> </td> <td><a href="/wiki/12" title="12">12</a> </td> <td><a href="/wiki/14" title="14">14</a> </td> <td><a href="/wiki/16" title="16">16</a> </td> <td><a href="/wiki/18" title="18">18</a> </td> <td><a href="/wiki/20" title="20">20</a> </td> <th style="width:5px;"> </th> <td><a href="/wiki/22" title="22">22</a> </td> <td><a href="/wiki/24" title="24">24</a> </td> <td><a href="/wiki/26" title="26">26</a> </td> <td><a href="/wiki/28" title="28">28</a> </td> <td><a href="/wiki/30" title="30">30</a> </td> <td><a href="/wiki/32" title="32">32</a> </td> <td><a href="/wiki/34" title="34">34</a> </td> <td><a href="/wiki/36" title="36">36</a> </td> <td><a href="/wiki/38" title="38">38</a> </td> <td><a href="/wiki/40" title="40">40</a> </td> <th style="width:5px;"> </th> <td><a href="/wiki/42" title="42">42</a> </td> <td><a href="/wiki/44" title="44">44</a> </td> <td><a href="/wiki/46" title="46">46</a> </td> <td><a href="/wiki/48" title="48">48</a> </td> <td><a href="/wiki/50" title="50">50</a> </td> <th style="width:5px;"> </th> <td><a href="/wiki/60" title="60">60</a> </td> <td><a href="/wiki/100" title="100">100</a> </td> <td><a href="/wiki/200" title="200">200</a> </td> <td><a href="/wiki/2000" title="2000">2000</a> </td></tr></tbody></table> <table class="wikitable" style="text-align: center;"> <tbody><tr> <th style="width:105px;"><a href="/wiki/%E9%99%A4%E6%B3%95" title="除法">除法</a> </th> <th>1 </th> <th>2 </th> <th>3 </th> <th>4 </th> <th>5 </th> <th>6 </th> <th>7 </th> <th>8 </th> <th>9 </th> <th>10 </th> <th style="width:5px;"> </th> <th>11 </th> <th>12 </th> <th>13 </th> <th>14 </th> <th>15 </th> <th>16 </th></tr> <tr> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 2\div x}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>2</mn> <mo>÷</mo> <mi>x</mi> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 2\div x}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/fdc7faf99cdf58f0421fcdf2675e2f844149031f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:5.333ex; height:2.176ex;" alt="{\displaystyle 2\div x}"></span> </td> <td><b>2</b> </td> <td>1 </td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.{\overline {6}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>6</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.{\overline {6}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/7b55471af268e2ba275898f45d53baab020eadaf" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:3.087ex; height:2.843ex;" alt="{\displaystyle 0.{\overline {6}}}"></span> </td> <td><a href="/wiki/0.5" class="mw-redirect" title="0.5">0.5</a> </td> <td>0.4 </td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.{\overline {3}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>3</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.{\overline {3}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/20b022962910d271e91375da21d6f5e231fef6d1" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:3.087ex; height:2.843ex;" alt="{\displaystyle 0.{\overline {3}}}"></span> </td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.{\overline {2}}8571{\overline {4}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>2</mn> <mo accent="false">¯</mo> </mover> </mrow> <mn>8571</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>4</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.{\overline {2}}8571{\overline {4}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6c891d8c1819c1bf28068007f8a00d473a4eacf2" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:9.014ex; height:3.009ex;" alt="{\displaystyle 0.{\overline {2}}8571{\overline {4}}}"></span> </td> <td>0.25 </td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.{\overline {2}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>2</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.{\overline {2}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/026a8b8f17d9d81b69b3c5ab1ffae14395b8d633" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:3.087ex; height:2.843ex;" alt="{\displaystyle 0.{\overline {2}}}"></span> </td> <td>0.2 </td> <th> </th> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.{\overline {1}}{\overline {8}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>1</mn> <mo accent="false">¯</mo> </mover> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>8</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.{\overline {1}}{\overline {8}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6db1dfa7040357075e7f2691958a5b181b24030e" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:4.364ex; height:2.843ex;" alt="{\displaystyle 0.{\overline {1}}{\overline {8}}}"></span> </td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.1{\overline {6}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.1</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>6</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.1{\overline {6}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d48bb04b28140b5791a1e51a02a9cb7bdfa781a4" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:4.249ex; height:2.843ex;" alt="{\displaystyle 0.1{\overline {6}}}"></span> </td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.{\overline {1}}5384{\overline {6}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>1</mn> <mo accent="false">¯</mo> </mover> </mrow> <mn>5384</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>6</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.{\overline {1}}5384{\overline {6}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/6bfd0e0c36b5973e7d3d457f34053186596d203a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:9.014ex; height:2.843ex;" alt="{\displaystyle 0.{\overline {1}}5384{\overline {6}}}"></span> </td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.{\overline {1}}4285{\overline {7}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>1</mn> <mo accent="false">¯</mo> </mover> </mrow> <mn>4285</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>7</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.{\overline {1}}4285{\overline {7}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/2f242a811bd06061b81ead90665882b913d6159a" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:9.014ex; height:3.009ex;" alt="{\displaystyle 0.{\overline {1}}4285{\overline {7}}}"></span> </td> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 0.1{\overline {3}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>0.1</mn> <mrow class="MJX-TeXAtom-ORD"> <mover> <mn>3</mn> <mo accent="false">¯</mo> </mover> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 0.1{\overline {3}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/69ecffdee7b3de476053a6130a2a4c5e3415f05f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:4.249ex; height:2.843ex;" alt="{\displaystyle 0.1{\overline {3}}}"></span> </td> <td>0.125 </td></tr> <tr> <td><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle x\div 2}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mi>x</mi> <mo>÷</mo> <mn>2</mn> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle x\div 2}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/fc1d5b35b2095b5f88f525eec7eaa94686850d6f" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:5.333ex; height:2.176ex;" alt="{\displaystyle x\div 2}"></span> </td> <td>0.5 </td> <td>1 </td> <td>1.5 </td> <td><b>2</b> </td> <td>2.5 </td> <td>3 </td> <td>3.5 </td> <td>4 </td> <td>4.5 </td> <td>5 </td> <th> </th> <td>5.5 </td> <td>6 </td> <td>6.5 </td> <td><a href="/wiki/7" title="7">7</a> </td> <td>7.5 </td> <td>8 </td></tr></tbody></table> <table class="wikitable"> <tbody><tr> <th><a href="/wiki/%E4%B9%98%E6%96%B9" class="mw-redirect" title="乘方">乘方</a> </th> <th>1 </th> <th>2 </th> <th>3 </th> <th>4 </th> <th>5 </th> <th>6 </th> <th>7 </th> <th>8 </th> <th>9 </th> <th>10 </th> <th style="width:5px;"> </th> <th>11 </th> <th>12 </th> <th>13 </th> <th>14 </th> <th>15 </th> <th>16 </th> <th>17 </th> <th>18 </th> <th>19 </th> <th>20 </th></tr> <tr> <th><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{2}^{x}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msup> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mi>x</mi> </mrow> </msup> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{2}^{x}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/afe76e31f4a0630cf72a79625f035ca55656b4b0" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.335ex; height:2.343ex;" alt="{\displaystyle {{2}^{x}}}"></span> </th> <td><a class="mw-selflink selflink">2</a> </td> <td><a href="/wiki/4" title="4">4</a> </td> <td><a href="/wiki/8" title="8">8</a> </td> <td><a href="/wiki/16" title="16">16</a> </td> <td><a href="/wiki/32" title="32">32</a> </td> <td><a href="/wiki/64" title="64">64</a> </td> <td><a href="/wiki/128" title="128">128</a> </td> <td><a href="/wiki/256" title="256">256</a> </td> <td><a href="/wiki/512" title="512">512</a> </td> <td><a href="/wiki/1024" title="1024">1024</a> </td> <th style="width:5px;"> </th> <td><a href="/wiki/2048" class="mw-disambig" title="2048">2048</a> </td> <td>4096 </td> <td>8192 </td> <td>16384 </td> <td>32768 </td> <td><a href="/wiki/65536" title="65536">65536</a> </td> <td>131072 </td> <td>262144 </td> <td>524288 </td> <td>1048576 </td></tr> <tr> <th><span class="mwe-math-element"><span class="mwe-math-mathml-inline mwe-math-mathml-a11y" style="display: none;"><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle {{x}^{2}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mrow class="MJX-TeXAtom-ORD"> <msup> <mrow class="MJX-TeXAtom-ORD"> <mi>x</mi> </mrow> <mrow class="MJX-TeXAtom-ORD"> <mn>2</mn> </mrow> </msup> </mrow> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle {{x}^{2}}}</annotation> </semantics> </math></span><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f136a4d73ecb194b38e26dd9d6461b02e2c4c8ff" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:2.384ex; height:2.676ex;" alt="{\displaystyle {{x}^{2}}}"></span> </th> <td><a href="/wiki/1" title="1">1</a> </td> <td><a href="/wiki/4" title="4">4</a> </td> <td><a href="/wiki/9" title="9">9</a> </td> <td><a href="/wiki/16" title="16">16</a> </td> <td><a href="/wiki/25" title="25">25</a> </td> <td><a href="/wiki/36" title="36">36</a> </td> <td><a href="/wiki/49" title="49">49</a> </td> <td><a href="/wiki/64" title="64">64</a> </td> <td><a href="/wiki/81" title="81">81</a> </td> <td><a href="/wiki/100" title="100">100</a> </td> <th style="width:5px;"> </th> <td><a href="/wiki/121" title="121">121</a> </td> <td><a href="/wiki/144" title="144">144</a> </td> <td><a href="/wiki/169" title="169">169</a> </td> <td><a href="/wiki/196" title="196">196</a> </td> <td><a href="/wiki/225" title="225">225</a> </td> <td><a href="/wiki/256" title="256">256</a> </td> <td><a href="/wiki/289" title="289">289</a> </td> <td><a href="/wiki/324" title="324">324</a> </td> <td>361 </td> <td><a href="/wiki/400" title="400">400</a> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="在汉语中"><span id=".E5.9C.A8.E6.B1.89.E8.AF.AD.E4.B8.AD"></span>在汉语中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=3" title="编辑章节：在汉语中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:%E4%BA%8C-order.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/%E4%BA%8C-order.gif/120px-%E4%BA%8C-order.gif" decoding="async" width="120" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8e/%E4%BA%8C-order.gif/180px-%E4%BA%8C-order.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8e/%E4%BA%8C-order.gif/240px-%E4%BA%8C-order.gif 2x" data-file-width="300" data-file-height="300" /></a><figcaption>“二”字的笔顺</figcaption></figure> <p>在<a href="/wiki/%E7%8E%B0%E4%BB%A3%E6%A0%87%E5%87%86%E6%B1%89%E8%AF%AD" class="mw-redirect" title="现代标准汉语">现代标准汉语</a>中，数词2在不同情况下，常常需要变换用字以适应需要，这一点在其他数词中是不存在或罕见的。 </p> <div class="mw-heading mw-heading3"><h3 id="用“二”及“贰”的情况"><span id=".E7.94.A8.E2.80.9C.E4.BA.8C.E2.80.9D.E5.8F.8A.E2.80.9C.E8.B4.B0.E2.80.9D.E7.9A.84.E6.83.85.E5.86.B5"></span>用“二”及“贰”的情况</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=4" title="编辑章节：用“二”及“贰”的情况"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>一般地，作<b><a href="/wiki/%E5%BA%8F%E6%95%B0" title="序数">序数</a></b>（含省略“第”字的序数）时，应当用“二”。例：一二三四、二月二日、<a href="/wiki/%E6%AD%A3%E6%9C%88" title="正月">正月</a><a href="/wiki/%E6%AD%A3%E6%9C%88%E5%88%9D%E4%BA%8C" title="正月初二">初二</a>、<a href="/wiki/%E4%BA%8C%E4%B8%83%E5%A4%A7%E7%BD%A2%E5%B7%A5" class="mw-redirect" title="二七大罢工">二七大罢工</a>、第二，二手（“‘第二’手”的略语）、<a href="/wiki/%E4%BA%8C%E6%88%98" class="mw-redirect" title="二战">二战</a>（“‘第二’次世界大战”的略语）、<a href="/wiki/%E4%BA%8C%E9%94%85%E5%A4%B4" title="二锅头">二锅头</a>（“‘第二’锅产”的略语）、<a href="/wiki/%E4%BC%8A%E8%8E%89%E8%8E%8E%E7%99%BD%E4%BA%8C%E4%B8%96%E5%A5%B3%E7%8E%8B" class="mw-redirect" title="伊莉莎白二世女王">伊丽莎白二世女王</a>（“‘第二’位”名叫伊丽莎白的女王的略语），西北风二级（“‘第二’级别”西北风的略语）。 <ul><li>在多位数中，<b>个、十、百位</b>应当用“二”，千、万、亿位可以用“二”。例：<a href="/wiki/%E5%8D%81%E4%BA%8C%E7%94%9F%E8%82%96" class="mw-redirect" title="十二生肖">十二生肖</a>、<a href="/wiki/%E4%BA%8C%E5%8D%81%E5%9B%9B%E8%8A%82%E6%B0%94" class="mw-redirect" title="二十四节气">二十四节气</a>、二百五、三万二千、二万五千里<a href="/wiki/%E9%95%BF%E5%BE%81" title="长征">长征</a>。</li></ul></li> <li>在含有可解释为<b>“两+量词”的<a href="/wiki/%E5%9F%BA%E6%95%B0_(%E6%95%B0%E5%AD%A6)" title="基数 (数学)">基数</a></b>的专有名词及习语中，应当用“二”。例：<a href="/wiki/%E4%BA%8C%E6%B0%A7%E5%8C%96%E7%A2%B3" title="二氧化碳">二氧化碳</a>（含有“两个”氧原子）、<a href="/wiki/%E4%BA%8C%E8%BF%9B%E5%88%B6" title="二进制">二进制</a>（含有“两个”数码）、二老（“两位”老人）、<a href="/wiki/%E4%BA%8C%E4%BA%BA%E8%BD%AC" title="二人转">二人转</a>（“两个”人表演）、<a href="/wiki/%E4%BA%8C%E8%83%A1" title="二胡">二胡</a>（“两根”弦）。 <ul><li>在<b>传统<a href="/wiki/%E4%B8%9C%E4%BA%9A%E4%BC%A0%E7%BB%9F%E5%BA%A6%E9%87%8F%E8%A1%A1" title="东亚传统度量衡">度量衡</a>单位</b>前，应当用“二”。例：二<a href="/wiki/%E5%B0%BA" title="尺">尺</a>、二<a href="/wiki/%E4%B8%A4" title="两">两</a>、二<a href="/wiki/%E7%9F%B3_(%E8%B4%A8%E9%87%8F%E5%8D%95%E4%BD%8D)" title="石 (质量单位)">石</a>。</li></ul></li> <li>在<b><a href="/wiki/%E7%A7%91%E5%AD%A6" title="科学">科学</a>（含<a href="/wiki/%E6%95%B0%E5%AD%A6" title="数学">数学</a>）</b>、<b>书面</b>用语中应当用“二（或贰）”。例：<a href="/wiki/%E7%94%9F%E7%89%A9%E5%AD%A6" title="生物学">生物学</a><a href="/wiki/%E6%9C%AF%E8%AF%AD" title="术语">术语</a>“二年生植物”、“二倍体”，<a href="/wiki/%E4%B9%98%E6%B3%95" title="乘法">乘法</a>口诀“二四得八”，<a href="/wiki/%E4%BA%BA%E6%B0%91%E5%B8%81" title="人民币">人民币</a>票面“贰圆（二元）”、金额数目字小写用“二”、大写用“贰”。 <ul><li>在<b><a href="/wiki/%E8%B4%9F%E6%95%B0" title="负数">负数</a>、<a href="/wiki/%E5%B0%8F%E6%95%B0" title="小数">小数</a>和<a href="/wiki/%E5%88%86%E6%95%B0" class="mw-redirect" title="分数">分数</a></b>中，应当用“二”。例：-2℃为负二<a href="/wiki/%E6%91%84%E6%B0%8F%E5%BA%A6" class="mw-redirect" title="摄氏度">摄氏度</a>或零下二度，零点二五、二点一七、二分之一。</li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="用“两”的情况"><span id=".E7.94.A8.E2.80.9C.E4.B8.A4.E2.80.9D.E7.9A.84.E6.83.85.E5.86.B5"></span>用“两”的情况</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=5" title="编辑章节：用“两”的情况"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>一般地，作<b><a href="/wiki/%E5%9F%BA%E6%95%B0_(%E6%95%B0%E5%AD%A6)" title="基数 (数学)">基数</a></b>时，应当用“两”（含部分省略“<a href="/wiki/%E9%87%8F%E8%AF%8D" title="量词">量词</a>”字的基数）。例：两个、两位，两栖（“‘两种’方式栖息”的略语）、<a href="/wiki/%E4%B8%A4%E6%9E%81" class="mw-redirect" title="两极">两极</a>（“‘两个’极端”的略语）、<a href="/wiki/%E5%85%A9%E6%80%A7" class="mw-disambig" title="兩性">两性</a>、<a href="/wiki/%E4%B8%A4%E5%B2%B8" class="mw-redirect" title="两岸">两岸</a>。</li> <li>在<b>现代度量衡单位</b>前，应当用“两”。例：两<a href="/wiki/%E5%88%86%E9%92%9F" title="分钟">分钟</a>（2min），两<a href="/wiki/%E6%AF%AB%E5%8D%87" title="毫升">毫升</a>（2mL）、两<a href="/wiki/%E5%8E%98%E7%B1%B3" title="厘米">厘米</a>（2cm）。</li> <li>在含有可解释为<b>“二者”或“双方”</b>的习语中，应当用“两”。例：两可、两厢情愿、两全其美、两败俱伤。 <ul><li>在多位数中，<b>千、万、亿位</b>可以用“两”。例：两千<a href="/wiki/%E5%90%A8" class="mw-redirect" title="吨">吨</a>、两万<a href="/wiki/%E5%B9%B3%E6%96%B9%E7%B1%B3" title="平方米">平方米</a>、两亿<a href="/wiki/%E4%BA%BA%E5%8F%A3" title="人口">人口</a>。另外，儿化音发音困难的方言区<b>百位</b>也用“两”，此种情况近年也逐渐在其他地区普及开来。</li></ul></li> <li>在<b>客套呼语</b>中，本应当用“两”的可以视情况改用“二”。例：两位客人，称“两位”时强调<a href="/wiki/%E6%95%B0%E9%87%8F" class="mw-redirect" title="数量">数量</a>，称“二位”一般作<a href="/wiki/%E4%BB%A3%E8%A9%9E" title="代詞">代词</a>称呼。</li> <li>另外，在<a href="/wiki/%E5%BB%A3%E5%B7%9E%E8%A9%B1" class="mw-redirect" title="廣州話">廣州話</a>中，“兩”在某些情況下亦可作約數使用，代表“幾”的意思。</li></ul> <div class="mw-heading mw-heading2"><h2 id="在科学中"><span id=".E5.9C.A8.E7.A7.91.E5.AD.A6.E4.B8.AD"></span>在科学中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=6" title="编辑章节：在科学中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%E6%B0%A6" title="氦">氦</a>的<a href="/wiki/%E5%8E%9F%E5%AD%90%E5%BA%8F%E6%95%B0" title="原子序数">原子序数</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/%E5%85%A9%E6%A3%B2%E9%A1%9E" class="mw-redirect" title="兩棲類">兩棲類</a></li> <li><a href="/wiki/%E4%BA%8C%E6%A5%B5%E9%AB%94" title="二極體">二極體</a></li> <li><a href="/wiki/%E4%BA%8C%E9%80%B2%E5%88%B6" class="mw-redirect" title="二進制">二進制</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="在人类文化中"><span id=".E5.9C.A8.E4.BA.BA.E7.B1.BB.E6.96.87.E5.8C.96.E4.B8.AD"></span>在人类文化中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=7" title="编辑章节：在人类文化中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%E4%BA%8C%E5%85%83%E8%AB%96" title="二元論">二元論</a>、<a href="/wiki/%E4%BA%8C%E5%85%83%E5%B0%8D%E7%AB%8B" title="二元對立">二元對立</a>。</li> <li>在<a href="/wiki/%E6%A8%82%E7%90%86" title="樂理">樂理</a>中，<a href="/wiki/%E7%B0%A1%E8%AD%9C" title="簡譜">簡譜</a>上的re音用2表示。<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></li> <li>在<a href="/wiki/%E5%A1%91%E8%86%A0%E5%88%86%E9%A1%9E%E6%A8%99%E8%AA%8C" title="塑膠分類標誌">塑膠分類標誌</a>中，代表<a href="/wiki/%E8%81%9A%E4%B9%99%E7%83%AF" title="聚乙烯">高密度聚乙烯</a>。</li> <li>太極生<a href="/wiki/%E4%B8%A4%E4%BB%AA" class="mw-redirect" title="两仪">兩儀</a>。</li> <li><a href="/wiki/%E9%9B%99%E8%83%9E%E8%83%8E" title="雙胞胎">雙胞胎</a>。</li> <li><a href="/wiki/%E5%B8%8C%E8%87%98%E7%A5%9E%E8%A9%B1" class="mw-redirect" title="希臘神話">希臘神話</a>當中的<a href="/wiki/%E9%9B%99%E5%AD%90%E5%BA%A7" class="mw-redirect" title="雙子座">雙子座</a>、<a href="/wiki/%E9%9B%99%E9%AD%9A%E5%BA%A7" class="mw-redirect" title="雙魚座">雙魚座</a>。</li> <li>中文姓名的<a href="/wiki/%E8%A4%87%E5%A7%93" title="複姓">複姓</a>。</li> <li>英文當中數字2（two）音似to、too，常常以2代寫。</li> <li><a href="/wiki/%E8%B1%A1%E6%A3%8B" title="象棋">象棋</a>、<a href="/wiki/%E6%92%B2%E5%85%8B%E7%89%8C" class="mw-redirect" title="撲克牌">撲克牌</a>有兩種顏色（黑與紅）。</li> <li><a href="/wiki/%E8%A5%BF%E6%B4%8B%E6%A3%8B" class="mw-redirect" title="西洋棋">西洋棋</a><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>、<a href="/wiki/%E5%9C%8D%E6%A3%8B" class="mw-redirect" title="圍棋">圍棋</a><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>有兩種顏色（黑與白）。</li> <li>世界文學經典名著《<a href="/wiki/%E9%9B%99%E5%9F%8E%E8%A8%98" class="mw-redirect" title="雙城記">雙城記</a>》。</li> <li>世界文學經典名著《<a href="/wiki/%E4%B9%9E%E4%B8%90%E7%8E%8B%E5%AD%90" title="乞丐王子">乞丐王子</a>》（故事內容主角是兩名長相一模一樣的小男孩）。</li> <li><a href="/wiki/%E9%81%93%E6%95%99" title="道教">道教</a>信仰神明<a href="/wiki/%E4%BA%8C%E9%83%8E%E7%A5%9E" title="二郎神">二郎神</a><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></li> <li>中國鬼差<a href="/wiki/%E9%BB%91%E7%99%BD%E7%84%A1%E5%B8%B8" title="黑白無常">黑白無常</a>、<a href="/wiki/%E7%89%9B%E9%A0%AD%E9%A6%AC%E9%9D%A2" title="牛頭馬面">牛頭馬面</a>、<a href="/w/index.php?title=%E7%94%98%E6%9F%B3%E5%B0%87%E8%BB%8D&action=edit&redlink=1" class="new" title="甘柳將軍（页面不存在）">甘柳將軍</a>。</li> <li>媽祖的部將<a href="/wiki/%E5%8D%83%E9%87%8C%E7%9C%BC" title="千里眼">千里眼</a>和<a href="/wiki/%E9%A0%86%E9%A2%A8%E8%80%B3" title="順風耳">順風耳</a>。</li> <li>中國<a href="/wiki/%E9%96%80%E7%A5%9E" class="mw-redirect" title="門神">門神</a>通常是一對的。</li> <li><a href="/wiki/%E9%9B%99%E5%AD%90%E6%98%9F" class="mw-disambig" title="雙子星">雙子星</a>。</li> <li><a href="/wiki/%E5%8D%81%E4%BA%8C%E7%94%9F%E8%82%96" class="mw-redirect" title="十二生肖">十二生肖</a>第二順位為<a href="/wiki/%E7%89%9B" class="mw-redirect" title="牛">牛</a>。</li> <li><a href="/wiki/%E9%BB%83%E9%81%93%E5%8D%81%E4%BA%8C%E5%AE%AE" title="黃道十二宮">黃道十二宮</a>第二順位為<a href="/wiki/%E9%87%91%E7%89%9B%E5%AE%AE" title="金牛宮">金牛宮</a>。</li> <li>依百家姓順序第二為<a href="/wiki/%E9%8C%A2%E5%A7%93" class="mw-redirect" title="錢姓">錢姓</a>。</li> <li>北美原住民部落的一種社會角色<a href="/wiki/%E9%9B%99%E9%9D%88" title="雙靈">雙靈</a>。</li> <li><a href="/wiki/%E4%BA%8C%E8%83%A1" title="二胡">二胡</a>、<a href="/wiki/%E4%BA%8C%E5%BC%A6" class="mw-disambig" title="二弦">二弦</a>。</li> <li><a href="/wiki/%E4%BA%8C%E5%8F%A0%E5%AD%97" title="二叠字">二疊字</a>。</li> <li>七巧節傳統習俗拜雙星（牛郎星、織女星）。</li> <li>在<a href="/wiki/DVD%E5%8C%BA%E5%9F%9F" class="mw-redirect" title="DVD区域">DVD区域</a>中表示<a href="/wiki/%E6%AC%A7%E6%B4%B2" title="欧洲">欧洲</a>、<a href="/wiki/%E5%8D%97%E9%9D%9E" title="南非">南非</a>、<a href="/wiki/%E4%B8%AD%E4%B8%9C" title="中东">中东</a>和<a href="/wiki/%E6%97%A5%E6%9C%AC" title="日本">日本</a>。</li> <li>02為<a href="/wiki/%E5%8F%B0%E5%8C%97%E5%B8%82" class="mw-redirect" title="台北市">台北</a>、<a href="/wiki/%E6%96%B0%E5%8C%97%E5%B8%82" title="新北市">新北</a>、<a href="/wiki/%E5%9F%BA%E9%9A%86%E5%B8%82" title="基隆市">基隆</a>電話區號代碼。</li> <li>台灣國際電話冠碼（002）。</li> <li>動漫用語<a href="/wiki/%E6%AC%A1%E5%85%83_(%E5%8B%95%E6%BC%AB%E7%94%A8%E8%AA%9E)" class="mw-redirect" title="次元 (動漫用語)">二次元</a>。</li> <li>比賽第二名稱之為<a href="/wiki/%E4%BA%9E%E8%BB%8D" title="亞軍">亞軍</a>。</li> <li><a href="/wiki/%E4%B8%AD%E4%BA%8C%E7%97%85" title="中二病">中二病</a>比喻日本青春期的少年過於自以為是等特別言行的俗語。</li> <li>情婦的俗稱為<a href="/wiki/%E4%BA%8C%E5%A5%B6" class="mw-redirect" title="二奶">二奶</a>。</li> <li><a href="/wiki/%E5%BA%97%E5%B0%8F%E4%BA%8C" class="mw-redirect" title="店小二">店小二</a>是指古代旅店或酒館的服侍員。</li> <li>“二”在汉语中有时可用于形容人愚笨，源於<a href="/wiki/%E4%BA%8C%E7%99%BE%E4%BA%94" class="mw-redirect" title="二百五">二百五</a>。</li></ul> <div class="mw-heading mw-heading2"><h2 id="在軍事政治中"><span id=".E5.9C.A8.E8.BB.8D.E4.BA.8B.E6.94.BF.E6.B2.BB.E4.B8.AD"></span>在軍事政治中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=8" title="编辑章节：在軍事政治中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%E6%B5%B7%E5%B3%BD%E5%85%A9%E5%B2%B8%E9%97%9C%E4%BF%82" title="海峽兩岸關係">海峽兩岸關係</a>（中華人民共和國、中華民國）</li> <li><a href="/wiki/%E4%B8%80%E5%9C%8B%E5%85%A9%E5%88%B6" class="mw-redirect" title="一國兩制">一國兩制</a></li> <li><a href="/wiki/%E5%85%A9%E9%BB%A8%E5%88%B6" title="兩黨制">兩黨制</a></li> <li><a href="/wiki/%E5%85%A9%E9%99%A2%E5%88%B6" title="兩院制">兩院制</a></li> <li><a href="/wiki/%E5%85%A9%E8%85%B3%E6%9E%B6" title="兩腳架">兩腳架</a></li> <li><a href="/wiki/%E7%AC%AC%E4%BA%8C%E6%AC%A1%E4%B8%96%E7%95%8C%E5%A4%A7%E6%88%B0" class="mw-redirect" title="第二次世界大戰">第二次世界大戰</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="在地理中"><span id=".E5.9C.A8.E5.9C.B0.E7.90.86.E4.B8.AD"></span>在地理中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=9" title="编辑章节：在地理中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/%E5%85%A9%E5%BB%A3" title="兩廣">兩廣</a>：<a href="/wiki/%E5%BB%A3%E6%9D%B1" class="mw-redirect" title="廣東">廣東</a>、<a href="/wiki/%E5%BB%A3%E8%A5%BF" class="mw-redirect" title="廣西">廣西</a>。</li> <li><a href="/wiki/%E5%85%A9%E6%B9%96" class="mw-redirect" title="兩湖">兩湖</a>：<a href="/wiki/%E6%B9%96%E5%8D%97" class="mw-redirect" title="湖南">湖南</a>、<a href="/wiki/%E6%B9%96%E5%8C%97" class="mw-redirect" title="湖北">湖北</a>。</li></ul> <div class="mw-heading mw-heading3"><h3 id="兩色國旗"><span id=".E5.85.A9.E8.89.B2.E5.9C.8B.E6.97.97"></span>兩色國旗</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=10" title="编辑章节：兩色國旗"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>亞洲 <ul><li><a href="/wiki/%E6%97%A5%E6%9C%AC" title="日本">日本</a>（紅白）、<a href="/wiki/%E4%B8%AD%E5%9C%8B" title="中國">中國</a>（紅黃）、<a href="/wiki/%E5%8D%B0%E5%B0%BC" class="mw-redirect" title="印尼">印尼</a>（紅白）、<a href="/wiki/%E6%96%B0%E5%8A%A0%E5%9D%A1" title="新加坡">新加坡</a>（紅白）、<a href="/wiki/%E8%B6%8A%E5%8D%97" title="越南">越南</a>（紅黃）、<a href="/wiki/%E5%AD%9F%E5%8A%A0%E6%8B%89" class="mw-redirect" title="孟加拉">孟加拉</a>（紅綠）、<a href="/wiki/%E5%B7%B4%E5%9F%BA%E6%96%AF%E5%9D%A6" title="巴基斯坦">巴基斯坦</a>（白绿）、<a href="/wiki/%E5%93%88%E8%90%A8%E5%85%8B%E6%96%AF%E5%9D%A6" title="哈萨克斯坦">哈薩克</a>（黃蓝）、<a href="/wiki/%E5%90%89%E7%88%BE%E5%90%89%E6%96%AF" class="mw-redirect" title="吉爾吉斯">吉爾吉斯</a>（紅黃）、<a href="/wiki/%E5%B7%B4%E6%9E%97" title="巴林">巴林</a>（紅白）、<a href="/wiki/%E5%96%AC%E6%B2%BB%E4%BA%9E" class="mw-redirect" title="喬治亞">喬治亞</a>（紅白）、<a href="/wiki/%E4%BB%A5%E8%89%B2%E5%88%97" title="以色列">以色列</a>（藍白）、<a href="/wiki/%E5%8D%A1%E9%81%94" class="mw-redirect" title="卡達">卡達</a>（白棕）、<a href="/wiki/%E6%B2%99%E7%83%8F%E5%9C%B0%E9%98%BF%E6%8B%89%E4%BC%AF" class="mw-redirect" title="沙烏地阿拉伯">沙烏地阿拉伯</a>（白绿）。</li></ul></li> <li>歐洲 <ul><li><a href="/wiki/%E5%9C%9F%E8%80%B3%E5%85%B6" title="土耳其">土耳其</a>（紅白）、<a href="/wiki/%E5%8C%97%E8%B3%BD%E6%99%AE%E5%8B%92%E6%96%AF" title="北賽普勒斯">北賽普勒斯</a>（紅白）、<a href="/wiki/%E6%91%A9%E7%B4%8D%E5%93%A5" class="mw-redirect" title="摩納哥">摩納哥</a>（紅白）、<a href="/wiki/%E4%B8%B9%E9%BA%A5" class="mw-redirect" title="丹麥">丹麥</a>（紅白）、<a href="/wiki/%E8%8A%AC%E8%98%AD" class="mw-redirect" title="芬蘭">芬蘭</a>（藍白）、<a href="/wiki/%E7%91%9E%E5%85%B8" title="瑞典">瑞典</a>（黃藍）、<a href="/wiki/%E5%A5%A7%E5%9C%B0%E5%88%A9" class="mw-redirect" title="奧地利">奧地利</a>（紅白）、<a href="/wiki/%E6%B3%A2%E8%98%AD" class="mw-redirect" title="波蘭">波蘭</a>（紅白）、<a href="/wiki/%E7%91%9E%E5%A3%AB" title="瑞士">瑞士</a>（紅白）、<a href="/wiki/%E7%83%8F%E5%85%8B%E8%98%AD" class="mw-redirect" title="烏克蘭">烏克蘭</a>（黃藍）、<a href="/wiki/%E9%98%BF%E7%88%BE%E5%B7%B4%E5%B0%BC%E4%BA%9E" class="mw-redirect" title="阿爾巴尼亞">阿爾巴尼亞</a>（紅黑）、<a href="/wiki/%E5%B8%8C%E8%87%98" class="mw-redirect" title="希臘">希臘</a>（藍白）、<a href="/wiki/%E9%A6%AC%E5%85%B6%E9%A0%93" class="mw-redirect mw-disambig" title="馬其頓">馬其頓</a>（紅黃）。</li></ul></li> <li>非洲 <ul><li><a href="/wiki/%E6%91%A9%E6%B4%9B%E5%93%A5" title="摩洛哥">摩洛哥</a>（紅綠）、<a href="/wiki/%E7%AA%81%E5%B0%BC%E8%A5%BF%E4%BA%9E" title="突尼西亞">突尼西亞</a>（紅白）、<a href="/wiki/%E7%B4%A2%E9%A6%AC%E5%88%A9%E4%BA%9E" class="mw-redirect" title="索馬利亞">索馬利亞</a>（藍白）、<a href="/wiki/%E8%8C%85%E5%88%A9%E5%A1%94%E5%B0%BC%E4%BA%9E" class="mw-redirect" title="茅利塔尼亞">茅利塔尼亞</a>（黃綠）。</li></ul></li> <li>美洲 <ul><li><a href="/wiki/%E5%8A%A0%E6%8B%BF%E5%A4%A7" title="加拿大">加拿大</a>（紅白）、<a href="/wiki/%E7%A5%95%E9%AD%AF" class="mw-redirect" title="祕魯">祕魯</a>（紅白）。</li></ul></li> <li>大洋洲 <ul><li><a href="/wiki/%E5%AF%86%E5%85%8B%E7%BD%97%E5%B0%BC%E8%A5%BF%E4%BA%9A%E8%81%94%E9%82%A6" title="密克罗尼西亚联邦">密克羅尼西亞</a>（藍白）、<a href="/wiki/%E5%B8%9B%E7%90%89" title="帛琉">帛琉</a>（黃藍）、<a href="/wiki/%E6%9D%B1%E5%8A%A0" title="東加">東加</a>（紅白）。</li></ul></li></ul> <div class="mw-heading mw-heading2"><h2 id="在曆法中"><span id=".E5.9C.A8.E6.9B.86.E6.B3.95.E4.B8.AD"></span>在曆法中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=11" title="编辑章节：在曆法中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>現代國際通用的<a href="/wiki/%E5%85%AC%E5%8E%86" title="公历">西曆</a>，將1<a href="/wiki/%E5%B9%B4" title="年">年</a>分成12个<a href="/wiki/%E6%9C%88" title="月">月</a>。12个月每月長度不一，但都有2日，分別為<a href="/wiki/1%E6%9C%882%E6%97%A5" title="1月2日">1月2日</a>、<a href="/wiki/2%E6%9C%882%E6%97%A5" title="2月2日">2月2日</a>、<a href="/wiki/3%E6%9C%882%E6%97%A5" title="3月2日">3月2日</a>、<a href="/wiki/4%E6%9C%882%E6%97%A5" title="4月2日">4月2日</a>、<a href="/wiki/5%E6%9C%882%E6%97%A5" title="5月2日">5月2日</a>、<a href="/wiki/6%E6%9C%882%E6%97%A5" title="6月2日">6月2日</a>、<a href="/wiki/7%E6%9C%882%E6%97%A5" title="7月2日">7月2日</a>、<a href="/wiki/8%E6%9C%882%E6%97%A5" title="8月2日">8月2日</a>、<a href="/wiki/9%E6%9C%882%E6%97%A5" title="9月2日">9月2日</a>、<a href="/wiki/10%E6%9C%882%E6%97%A5" title="10月2日">10月2日</a>、<a href="/wiki/11%E6%9C%882%E6%97%A5" title="11月2日">11月2日</a>和<a href="/wiki/12%E6%9C%882%E6%97%A5" title="12月2日">12月2日</a>。</li> <li>此外，在公曆紀年方面，人類對公元<a href="/wiki/%E5%89%8D2%E5%B9%B4" title="前2年">前2年</a>、公元<a href="/wiki/2%E5%B9%B4" title="2年">2年</a>，公元<a href="/wiki/%E5%89%8D2%E4%B8%96%E7%BA%AA" title="前2世纪">前2世纪</a>及公元<a href="/wiki/2%E4%B8%96%E7%BA%AA" title="2世纪">2世纪</a>均有記載。</li></ul> <div class="mw-heading mw-heading2"><h2 id="在體育中"><span id=".E5.9C.A8.E9.AB.94.E8.82.B2.E4.B8.AD"></span>在體育中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=12" title="编辑章节：在體育中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>在<a href="/wiki/%E6%A3%92%E7%90%83" title="棒球">棒球</a>中，2是<a href="/wiki/%E6%8D%95%E6%89%8B" title="捕手">捕手</a>的代號。</li> <li>以"2"開頭的：<a href="/wiki/%E4%BA%8C%E5%A3%98%E6%89%8B" title="二壘手">二壘手</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="在符号位置中"><span id=".E5.9C.A8.E7.AC.A6.E5.8F.B7.E4.BD.8D.E7.BD.AE.E4.B8.AD"></span>在符号位置中</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=13" title="编辑章节：在符号位置中"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <table class="wikitable" style="text-align:center;"> <tbody><tr> <th>記号</th> <th><a href="/wiki/Unicode" title="Unicode">Unicode</a></th> <th><a href="/w/index.php?title=JIS_X_0213&action=edit&redlink=1" class="new" title="JIS X 0213（页面不存在）">JIS X 0213</a></th> <th><a href="/wiki/%E5%AD%97%E7%AC%A6%E5%AE%9E%E4%BD%93%E5%BC%95%E7%94%A8" title="字符实体引用">字符实体引用</a></th> <th>名称 </th></tr> <tr> <td style="font-size:300%;line-height:100%">2</td> <td><code>U+0032</code></td> <td>1-3-17</td> <td><code>&#x32;</code><br /><code>&#50;</code></td> <td>DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">２</td> <td><code>U+FF12</code></td> <td>1-3-17</td> <td><code>&#xFF12;</code><br /><code>&#65298;</code></td> <td>FULLWIDTH DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">²</td> <td><code>U+00B2</code></td> <td>1-9-16</td> <td><code>&#xB2;</code><br /><code>&#178;</code></td> <td>SUPERSCRIPT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">₂</td> <td><code>U+2082</code></td> <td>-</td> <td><code>&#x2082;</code><br /><code>&#8322;</code></td> <td>SUBSCRIPT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">৵</td> <td><code>U+09F5</code></td> <td>-</td> <td><code>&#x9F5;</code><br /><code>&#2549;</code></td> <td>BENGALI CURRENCY NUMERATOR TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">༫</td> <td><code>U+0F2B</code></td> <td>-</td> <td><code>&#xF2B;</code><br /><code>&#3883;</code></td> <td>TIBETAN DIGIT HALF TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">፪</td> <td><code>U+136A</code></td> <td>-</td> <td><code>&#x136A;</code><br /><code>&#4970;</code></td> <td>ETHIOPIC DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">᧛</td> <td><code>U+19DB</code></td> <td>-</td> <td><code>&#x19DB;</code><br /><code>&#6619;</code></td> <td>NEW TAI LUE THAM DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">Ⅱ</td> <td><code>U+2161</code></td> <td>1-13-22</td> <td><code>&#x2161;</code><br /><code>&#8545;</code></td> <td>ROMAN NUMERAL TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">ⅱ</td> <td><code>U+2171</code></td> <td>1-12-22</td> <td><code>&#x2171;</code><br /><code>&#8561;</code></td> <td>SMALL ROMAN NUMERAL TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">②</td> <td><code>U+2461</code></td> <td>1-13-2</td> <td><code>&#x2461;</code><br /><code>&#9313;</code></td> <td>CIRCLED DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">⑵</td> <td><code>U+2475</code></td> <td>-</td> <td><code>&#x2475;</code><br /><code>&#9333;</code></td> <td>PARENTHESIZED DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">⒉</td> <td><code>U+2489</code></td> <td>-</td> <td><code>&#x2489;</code><br /><code>&#9353;</code></td> <td>DIGIT TWO FULL STOP </td></tr> <tr> <td style="font-size:300%;line-height:100%">⓶</td> <td><code>U+24F6</code></td> <td>1-6-59</td> <td><code>&#x24F6;</code><br /><code>&#9462;</code></td> <td>DOUBLE CIRCLED DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">❷</td> <td><code>U+2777</code></td> <td>1-12-2</td> <td><code>&#x2777;</code><br /><code>&#10103;</code></td> <td>DINGBAT NEGATIVE CIRCLED DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">➁</td> <td><code>U+2781</code></td> <td>-</td> <td><code>&#x2781;</code><br /><code>&#10113;</code></td> <td>DINGBAT CIRCLED SANS-SERIF DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">➋</td> <td><code>U+278B</code></td> <td>-</td> <td><code>&#x278B;</code><br /><code>&#10123;</code></td> <td>DINGBAT NEGATIVE CIRCLED SANS-SERIF DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">㆓</td> <td><code>U+3193</code></td> <td>-</td> <td><code>&#x3193;</code><br /><code>&#12691;</code></td> <td>IDEOGRAPHIC ANNOTATION TWO MARK </td></tr> <tr> <td style="font-size:300%;line-height:100%">㈡</td> <td><code>U+3221</code></td> <td>-</td> <td><code>&#x3221;</code><br /><code>&#12833;</code></td> <td>PARENTHESIZED IDEOGRAPH TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">㊁</td> <td><code>U+3281</code></td> <td>-</td> <td><code>&#x3281;</code><br /><code>&#12929;</code></td> <td>CIRCLED IDEOGRAPH TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">二</td> <td><code>U+4E8C</code></td> <td>1-38-83</td> <td><code>&#x4E8C;</code><br /><code>&#20108;</code></td> <td>CJK Ideograph, number two </td></tr> <tr> <td style="font-size:300%;line-height:100%">弍</td> <td><code>U+5F0D</code></td> <td>1-48-17</td> <td><code>&#x5F0D;</code><br /><code>&#24333;</code></td> <td>CJK Ideograph, number two </td></tr> <tr> <td style="font-size:300%;line-height:100%">貮</td> <td><code>U+8CAE</code></td> <td>1-76-41</td> <td><code>&#x8CAE;</code><br /><code>&#36014;</code></td> <td>CJK Ideograph, number two </td></tr> <tr> <td style="font-size:300%;line-height:100%">貳</td> <td><code>U+8CB3</code></td> <td>1-76-40</td> <td><code>&#x8CB3;</code><br /><code>&#36019;</code></td> <td>CJK Ideograph, number two </td></tr> <tr> <td style="font-size:300%;line-height:100%">𐄈</td> <td><code>U+10108</code></td> <td>-</td> <td><code>&#x10108;</code><br /><code>&#65800;</code></td> <td>AEGEAN NUMBER TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𐡙</td> <td><code>U+10859</code></td> <td>-</td> <td><code>&#x10859;</code><br /><code>&#67673;</code></td> <td>IMPERIAL ARAMAIC NUMBER TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𐤗</td> <td><code>U+10917</code></td> <td>-</td> <td><code>&#x10917;</code><br /><code>&#67863;</code></td> <td>PHOENICIAN NUMBER TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𐩁</td> <td><code>U+10A41</code></td> <td>-</td> <td><code>&#x10A41;</code><br /><code>&#68161;</code></td> <td>KHAROSHTHI DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𐩾</td> <td><code>U+10A7E</code></td> <td>-</td> <td><code>&#x10A7E;</code><br /><code>&#68222;</code></td> <td>OLD SOUTH ARABIAN NUMBER TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𐭙</td> <td><code>U+10B59</code></td> <td>-</td> <td><code>&#x10B59;</code><br /><code>&#68441;</code></td> <td>INSCRIPTIONAL PARTHIAN NUMBER TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𐹡</td> <td><code>U+10E61</code></td> <td>-</td> <td><code>&#x10E61;</code><br /><code>&#69217;</code></td> <td>RUMI DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𝍡</td> <td><code>U+1D361</code></td> <td>-</td> <td><code>&#x1D361;</code><br /><code>&#119649;</code></td> <td>COUNTING ROD UNIT DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">🄃</td> <td><code>U+1F103</code></td> <td>-</td> <td><code>&#x1F103;</code><br /><code>&#127235;</code></td> <td>DIGIT TWO COMMA </td></tr> <tr> <td style="font-size:300%;line-height:100%">𝟚</td> <td><code>U+1D7DA</code></td> <td>-</td> <td><code>&#x1D7DA;</code><br /><code>&#120794;</code></td> <td>MATHEMATICAL DOUBLE-STRUCK DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𝟸</td> <td><code>U+1D7F8</code></td> <td>-</td> <td><code>&#x1D7F8;</code><br /><code>&#120824;</code></td> <td>MATHEMATICAL MONOSPACE DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𝟐</td> <td><code>U+1D7D0</code></td> <td>-</td> <td><code>&#x1D7D0;</code><br /><code>&#120784;</code></td> <td>MATHEMATICAL BOLD DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𝟤</td> <td><code>U+1D7E4</code></td> <td>-</td> <td><code>&#x1D7E4;</code><br /><code>&#120804;</code></td> <td>MATHEMATICAL SANS-SERIF DIGIT TWO </td></tr> <tr> <td style="font-size:300%;line-height:100%">𝟮</td> <td><code>U+1D7EE</code></td> <td>-</td> <td><code>&#x1D7EE;</code><br /><code>&#120814;</code></td> <td>MATHEMATICAL SANS-SERIF BOLD DIGIT TWO </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="参见"><span id=".E5.8F.82.E8.A7.81"></span>参见</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=14" title="编辑章节：参见"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r82655521">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:#f9f9f9;display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 0.9em;text-align:center}.mw-parser-output .side-box-imageright{padding:2px 0.9em 2px 0;text-align:center}@media(min-width:500px){.mw-parser-output .side-box-flex{display:flex;align-items:center}.mw-parser-output .side-box-text{flex:1}}@media(min-width:720px){.mw-parser-output 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//upload.wikimedia.org/wikipedia/commons/thumb/e/ec/Wiktionary-logo.svg/80px-Wiktionary-logo.svg.png 2x" data-file-width="370" data-file-height="350" /></span></span></div> <div class="side-box-text plainlist">查看<a href="/wiki/%E7%BB%B4%E5%9F%BA%E8%AF%8D%E5%85%B8" title="维基词典">维基词典</a>中的词条「<b><a href="https://zh.wiktionary.org/wiki/%E4%BA%8C" class="extiw" title="wikt:二">二</a></b>」。</div></div> </div> <ul><li><a href="/wiki/%E9%99%A4%E4%BB%A5%E4%BA%8C" title="除以二">除以二</a></li> <li><a href="/wiki/%E4%BA%8C%E9%83%A8" title="二部">二部</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="另見"><span id=".E5.8F.A6.E8.A6.8B"></span>另見</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=15" title="编辑章节：另見"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="selfreference"><a href="/wiki/Special:%E5%89%8D%E7%BC%80%E7%B4%A2%E5%BC%95/2" title="Special:前缀索引/2">名稱以「2」開頭的所有条目</a></span></li></ul> <div class="mw-heading mw-heading2"><h2 id="参考文献"><span id=".E5.8F.82.E8.80.83.E6.96.87.E7.8C.AE"></span>参考文献</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=2&action=edit&section=16" title="编辑章节：参考文献"><span>编辑</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist" style="list-style-type: decimal;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://www.rsc.org/periodic-table">Royal Society of Chemistry - Visual Element Periodic Table</a>. <span class="reference-accessdate"> [<span class="nowrap">2012-10-13</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20160410112333/http://www.rsc.org/periodic-table">存档</a>于2016-04-10）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A2&rft.btitle=Royal+Society+of+Chemistry+-+Visual+Element+Periodic+Table&rft.genre=unknown&rft_id=http%3A%2F%2Fwww.rsc.org%2Fperiodic-table&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://blog.ccguitar.cn/?uid-180818-action-viewspace-itemid-3722">怎样识简谱 - 完全跑调_bbs的个人空间 - 虫虫吉他爱好者空间 - Powered by X-Space</a>. blog.ccguitar.cn. <span class="reference-accessdate"> [<span class="nowrap">2019-09-06</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20201102180719/http://blog.ccguitar.cn/?uid-180818-action-viewspace-itemid-3722">存档</a>于2020-11-02）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A2&rft.atitle=%E6%80%8E%E6%A0%B7%E8%AF%86%E7%AE%80%E8%B0%B1+-+%E5%AE%8C%E5%85%A8%E8%B7%91%E8%B0%83_bbs%E7%9A%84%E4%B8%AA%E4%BA%BA%E7%A9%BA%E9%97%B4+-+%E8%99%AB%E8%99%AB%E5%90%89%E4%BB%96%E7%88%B1%E5%A5%BD%E8%80%85%E7%A9%BA%E9%97%B4+-+Powered+by+X-Space&rft.genre=unknown&rft.jtitle=blog.ccguitar.cn&rft_id=http%3A%2F%2Fblog.ccguitar.cn%2F%3Fuid-180818-action-viewspace-itemid-3722&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="http://games.sports.cn/server/guoxiang/2008-04-22/1442015.html">国际象棋简明规则 - 中国棋院在线</a>. games.sports.cn. <span class="reference-accessdate"> [<span class="nowrap">2019-09-06</span>]</span>. （原始内容<a rel="nofollow" class="external text" href="https://web.archive.org/web/20200130234100/http://games.sports.cn/server/guoxiang/2008-04-22/1442015.html">存档</a>于2020-01-30）.</cite><span title="ctx_ver=Z39.88-2004&rfr_id=info%3Asid%2Fzh.wikipedia.org%3A2&rft.atitle=%E5%9B%BD%E9%99%85%E8%B1%A1%E6%A3%8B%E7%AE%80%E6%98%8E%E8%A7%84%E5%88%99+-+%E4%B8%AD%E5%9B%BD%E6%A3%8B%E9%99%A2%E5%9C%A8%E7%BA%BF&rft.genre=unknown&rft.jtitle=games.sports.cn&rft_id=http%3A%2F%2Fgames.sports.cn%2Fserver%2Fguoxiang%2F2008-04-22%2F1442015.html&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" 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= \"item\",\n [\"id\"] = \"Q68564240\",\n [\"numeric-id\"] = 68564240,\n },\n },\n [\"hash\"] = \"a9907a9f3b8e5aa57c922543a87fda00e1f5af8b\",\n [\"property\"] = \"P3294\",\n [\"snaktype\"] = \"value\",\n },\n table#9 {\n [\"datatype\"] = \"wikibase-item\",\n [\"datavalue\"] = table#10 {\n [\"type\"] = \"wikibase-entityid\",\n [\"value\"] = table#11 {\n [\"entity-type\"] = \"item\",\n [\"id\"] = \"Q68573687\",\n [\"numeric-id\"] = 68573687,\n },\n },\n [\"hash\"] = \"915e440946906b363a00a11dce8bdc162c3cb8b6\",\n [\"property\"] = \"P3294\",\n [\"snaktype\"] = \"value\",\n },\n },\n },\n [\"qualifiers-order\"] = table#12 {\n \"P3294\",\n },\n [\"rank\"] = \"normal\",\n [\"type\"] = \"statement\",\n}\ntable#1 {\n [\"id\"] = \"Q200$D0BC39E2-4B2C-4A0A-96F3-427563BD4F90\",\n [\"mainsnak\"] = table#2 {\n [\"datatype\"] = \"string\",\n [\"datavalue\"] = table#3 {\n [\"type\"] = \"string\",\n [\"value\"] = \"II\",\n },\n [\"property\"] = \"P3295\",\n [\"snaktype\"] = \"value\",\n },\n [\"qualifiers\"] = table#4 {\n [\"P3294\"] = table#5 {\n table#6 {\n [\"datatype\"] = \"wikibase-item\",\n [\"datavalue\"] = table#7 {\n [\"type\"] = \"wikibase-entityid\",\n [\"value\"] = table#8 {\n [\"entity-type\"] = \"item\",\n [\"id\"] = \"Q68401769\",\n [\"numeric-id\"] = 68401769,\n },\n },\n [\"hash\"] = \"a374ae9d234db094544ae5babad666965034f47e\",\n [\"property\"] = \"P3294\",\n [\"snaktype\"] = \"value\",\n },\n },\n },\n [\"qualifiers-order\"] = table#9 {\n \"P3294\",\n },\n [\"rank\"] = \"normal\",\n [\"type\"] = \"statement\",\n}\ntable#1 {\n [\"id\"] = \"Q200$a681eed7-47ab-18f3-23e1-d94040645c63\",\n [\"mainsnak\"] = table#2 {\n [\"datatype\"] = \"string\",\n [\"datavalue\"] = table#3 {\n [\"type\"] = \"string\",\n [\"value\"] = \"..---\",\n },\n [\"property\"] = \"P3295\",\n [\"snaktype\"] = \"value\",\n },\n [\"qualifiers\"] = table#4 {\n [\"P3294\"] = table#5 {\n table#6 {\n [\"datatype\"] = \"wikibase-item\",\n [\"datavalue\"] = table#7 {\n [\"type\"] = \"wikibase-entityid\",\n [\"value\"] = table#8 {\n [\"entity-type\"] = \"item\",\n [\"id\"] = \"Q79897\",\n [\"numeric-id\"] = 79897,\n },\n },\n [\"hash\"] = \"f1756d6072a1b5a6bb9f9b28ba190da774d7f15f\",\n [\"property\"] = \"P3294\",\n [\"snaktype\"] = \"value\",\n },\n },\n },\n [\"qualifiers-order\"] = table#9 {\n \"P3294\",\n },\n [\"rank\"] = \"normal\",\n [\"references\"] = table#10 {\n table#11 {\n [\"hash\"] = \"00c961c3824a2e5e01e106920a547b928a85e6d9\",\n [\"snaks\"] = table#12 {\n [\"P854\"] = table#13 {\n table#14 {\n [\"datatype\"] = \"url\",\n [\"datavalue\"] = table#15 {\n [\"type\"] = \"string\",\n [\"value\"] = \"https://www.itu.int/dms_pubrec/itu-r/rec/m/R-REC-M.1677-1-200910-I!!PDF-E.pdf\",\n },\n [\"property\"] = \"P854\",\n [\"snaktype\"] = \"value\",\n },\n },\n },\n [\"snaks-order\"] = table#16 {\n \"P854\",\n },\n },\n },\n [\"type\"] = \"statement\",\n}\ntable#1 {\n [\"id\"] = \"Q200$ddeeb743-425a-c00f-a8b3-f4b5970b6ed3\",\n [\"mainsnak\"] = table#2 {\n [\"datatype\"] = \"string\",\n [\"datavalue\"] = table#3 {\n [\"type\"] = \"string\",\n [\"value\"] = \"𒐖\",\n },\n [\"property\"] = \"P3295\",\n [\"snaktype\"] = \"value\",\n },\n [\"qualifiers\"] = table#4 {\n [\"P3294\"] = table#5 {\n table#6 {\n [\"datatype\"] = \"wikibase-item\",\n [\"datavalue\"] = table#7 {\n [\"type\"] = \"wikibase-entityid\",\n [\"value\"] = table#8 {\n [\"entity-type\"] = \"item\",\n [\"id\"] = \"Q506274\",\n [\"numeric-id\"] = 506274,\n },\n },\n [\"hash\"] = \"e873941c7a6461a42ee0453317edefa97baf2fc2\",\n [\"property\"] = \"P3294\",\n [\"snaktype\"] = \"value\",\n },\n },\n },\n [\"qualifiers-order\"] = table#9 {\n \"P3294\",\n },\n [\"rank\"] = \"normal\",\n [\"type\"] = \"statement\",\n}\ntable#1 {\n [\"id\"] = \"Q200$3E8F8F52-F9AE-4F8B-BD9C-0DCF377B4C10\",\n [\"mainsnak\"] = table#2 {\n [\"datatype\"] = \"commonsMedia\",\n [\"datavalue\"] = table#3 {\n [\"type\"] = \"string\",\n [\"value\"] = \"Old tamil number2.jpg\",\n },\n [\"property\"] = 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