If you check the basic attributes again, in the same way we did earlier, you should see that the last modified time has been altered but the creation time and last access time have remained the same.

如果以前面相同的方式再次检查基本属性，您会发现最后修改时间已被修改，但是创建时间和最后访问时间还保持原样。

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If the response file has the same Last-Modified time stamp, the server returns code 304 to the browser to tell it that the response file is the same.

如果响应文件拥有相同的Last - Modified时间戳，则服务器将返回代码304到浏览器，告知浏览器响应文件相同。

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If the content is stale, the browser sends a request to the server to compare the Last-Modified time stamp.

如果内容失效，浏览器将发送一个请求到服务器以比较Last - Modified时间戳。

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