002_special_char.html

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<html lang="en">
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    <meta charset="UTF-8">
    <title>special char</title>
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    <a href="http://www.baidu.com">ba&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;idu</a>
        <!--&nbsp : refers to a space char-->
        <!--&gt; : refers to a >-->
        <!--&lt; : refers to a <-->
        <!--There are a lot of this kind of special char and you can find on the internet-->
</body>
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原文地址：https://www.cnblogs.com/liujun5319/p/9657873.html