当进行搜寻时，搜索引擎使用索引， 索引是服务器上所有文件的列表。

When conducting a search, a search engine makes use of an index, which is a list of all the documents on the server.

youdao

当进行搜寻时，搜索引擎使用索引， 索引是服务器上所有文件的列表。

When conducting a search, a search engine makes use of an index, which is a list of all the documents on the server.

youdao