While index extensions are by no means as powerful as a full-text index for the intended purposes, you may encounter situations where a light-weight text search that is still index-based is desired.

虽然索引扩展不如专用的全文本索引强大，但是在某些情况下，仍然还是需要基于索引的轻量级文本搜索。

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The index generated by this module can then be used by the search module to provide an integrated full-text search experience for a web site.

通过此模块生成索引供搜索模块使用，从而实现全站搜索的功能。

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In this system there are four parts: Orientation Search; Personal Information Service; Electron Publication Manager and Full-text Index.

它主要由四部分组成：定题搜索、个性化信息服务、电子刊物管理及其全文检索系统。

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