The index typically requires a smaller amount of computer storage, which is why some search engines only store the indexed information and not the full content of each item, and instead provide a method of navigating to the items in the search engine result page.
索引通常需要较少量的计算机存储，这就是为什么一些搜索引擎仅存储索引的信息而不是每个项目的完整内容，而是提供导航到搜索引擎结果页面中的项目的方法。