基本上，除了每个文件中的每个词语的出现频率，还必须收集每个文件中词语出现的偏移列表。

Basically, along with the number of occurrences of each word in each file, we would have to collect, for each file, a list of offsets where the word occurs.

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不管参数列表区域多大，被调用的函数总可以知道每个参数的精确偏移量。

This way, the function being called can know the exact offset of each parameter, no matter how big the parameter list area is.

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