It is a research engine that lets you access expert content from the "Deep Web", the part of the Internet that is not indexed by traditional search engines (e.g. databases, journals etc.).

这是一个研究引擎帮助你进入专业内容的“深层网络”：那是互联网中没有被传统的搜索引擎索引或收录的信息(比如一些专业数据库，期刊等)。

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Google Scholar allows interested users to make a search on, say "oil spills, " and receive research articles and patents or legal opinions and journals.

Google学术搜索允许用户输入某些关键词，然后可以得到科研文章和专利，以及法律建议和期刊。

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Recently I did a Web search of the sports science journals to see if any research has found a positive relationship between fatigue and athletic performance.

最近我在运动科学杂志的网页上搜寻，看看是否任何的研究已经发现在疲劳和运动成绩之间有一种正面的关联。

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