索引没有包含更深层次的 “price”元素，表中可能存在该元素且可能与谓词路径 $i//price 相匹配。
The index does not contain "price" elements at a deeper level, which may exist in the table and are potential matches for the predicate path $i//price.
返回指定目录中与指定的搜索模式匹配的文件的名称(包含它们的路径)，并使用一个值以确定是否搜索子目录。
Returns the names of files (including their paths) that match the specified search pattern in the specified directory, using a value to determine whether to search subdirectories.
返回指定目录中与指定的搜索模式匹配的文件的名称(包含它们的路径)。
Returns the names of files (including their paths) that match the specified search pattern in the specified directory.
要求输出包含一个或多个以上关键字的文件路径，和关键字总匹配次数。
Required output contains one or more of the above keywords file path, and the keyword match the total number of times.
要求输出包含一个或多个以上关键字的文件路径，和关键字总匹配次数。
Required output contains one or more of the above keywords file path, and the keyword match the total number of times.
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