Web服务也许是最普遍的预输入来源。

A Web service is probably the most common source of Suggestions for type-ahead fields.

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它要求编程人员覆盖所有可能的输入来源（查询参数、POST 请求的 body 参数、HTTP 头）。

It requires the programmer to cover all possible input sources (query parameters, body parameters of POST requests, HTTP headers).

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cgi脚本用户输入的其他来源是环境变量PATH_INFO。

The other source of user input for CGI scripts is the PATH_INFO environment variable.

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