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<em>em強調</em><br>
<strong>strong着重</strong><br>
<dfn>definition定義</dfn><br>
<code>code代碼</code><br>
<samp>samp例子代碼</samp><br>
<kbd>kbd用戶輸入</kbd><br>
<var>variable變量</var><br>
<cite>cite引用</cite><br>
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