相反，它可以让你一键点击更加深入地了解搜索关键词。

Instead, it offers you a deeper insight about your search query with a click.

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例如，日期表的外键对于一个文档的每个关键词不会重复。

For example, the foreign key to the date table is not repeated for every keyword of a document.

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一个全局反向索引仅仅是一个设计，其中创建的映射的键是搜索关键词，且其值是包含属性与搜索关键词的键列表。

A global reverse index is simply a design where you create a map whose key is the search term, and the value is the list of keys containing an attribute with that search term.

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