This API is just one example of the many useful APIs out there for retrieving useful information from alternative, Web 2.0 data sources.
这个API只是很多用于从Web 2.0数据源获取有用信息的API的一个例子。
The skill of retrieving standard information is intro- duced. The web site should be selected according to search field and search results.
介绍了检索标准信息的技巧：根据可检字段和检索结果，选择适合用户需求的网站；
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