作者:邢志宇
1、A program that performs keyword searches for information on the Internet.
2、Computer programs used in databases and on the Internet that search for records that match your request. In a catalog or index database, search engines search specified fields (author, title, subject headings, etc.) of each record in the database. On the web, the robots crawl about the web indexing sites, usually looking at URLs, text in the document, or the heading of the document.

3、搜索引擎（Search Engines）是一个对互联网上的信息资源进行搜集整理，然后供你查询的系统，它包括信息搜集、信息整理和用户查询三部分。
4、搜索引擎是一个提供信息“检索”服务的网站，它使用某些程序把因特网上的所有信息归类以帮助人们在茫茫网海中搜寻到所需要的信息。