站点上通常都含有那些搜索引擎没必要建立索引的页面，例如脚本目录中的文件、管理页面和错误页面等等。

Usually on a site, there are pages that are not useful for a search engine to index, such as files in the scripts directory, administrative pages, error pages, and so on.

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Azure平台提供了很多服务，比如像用于文件存储与数据访问的面向基础设施的服务，同时也提供了更为专用的服务，比如搜索和联系人管理。

The Azure platform provides numerous services such as services for infrastructure like file storage and data access, as well as more specialized services like search and contact management.

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搜索子系统: 这个子系统负责在索引文件上进行搜索并把搜索结构传递给请求管理器。

Searching: This subsystem searches on the Lucene index and returns the search results to the Request Manager subsystem.

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