Status codes in the four hundreds are for client errors.

四百中的状态代码用于客户端错误。

For example, status code 200 means OK – I've got the page and here it is!

例如，状态代码 200 表示正常 - 我已经找到页面了！

In later versions, HTTP added status codes, which prefixed any hypertext that was sent following a GET request.

在后来的版本中，HTTP 添加了状态代码，它作为 GET 请求后发送的任何超文本的前缀。