The earlier SHEEP application example illustrated a weakness in using time to trigger scheduled actions — the program can skip over schedule triggers.

前面的SHEEP应用程序例子说明了使用时间触发预定行为的弱点——这个程序可以跳过调度触发。

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Modify your program from the previous exercise to read the book you downloaded, skip over the header information at the beginning of the file, and process the rest of the words as before.

修改一下刚才上一个练习你写的程序，让这个程序能读取你下载的这本书，跳过文件开头部分的信息，继续以上个练习中的方式来处理一下整本书的正文。

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