Most search engines use an inverted index — rather than compiling a list of every single Web page and all its words, for every single word, they compile a list of the places where it appears.
大部分搜索引擎使用一种倒排索引——不是针对每个单一的单词，为每个单一的网页及其上面的所有单词都编排一个目录，而是为每个单词出现的位置编排一个目录。
This rule can be inverted to store a 0 if the run begins with a 0 bit, but the effect is the same as long as both the encoder and the decoder of the inversion list agree on this detail.
如果开始出现的是0 ，那么这个规则需要改变，但效果是一样的，因为编码器和解码器都遵循这一规则。
This rule can be inverted to store a 0 if the run begins with a 0 bit, but the effect is the same as long as both the encoder and the decoder of the inversion list agree on this detail.
如果开始出现的是0 ，那么这个规则需要改变，但效果是一样的，因为编码器和解码器都遵循这一规则。
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