The logic in the feed sources input component simply reads from a file, whose name is passed as a function input argument.

提要源输入组件的逻辑只是简单地从文件中读取，而文件的名字则以函数输入参数的形式传递。

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Put simply, the description in Listing 1 says "there is a person whose name is Edd Dumbill and whose e-mail address is edd@xml.com."

简单地说， 清单 1中的描述表明“有一个名叫 Edd Dumbill 的人，他的电子邮件地址为 edd@xml.com。”

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