Looking at a number of sources gives you a good knowledge base, but students only have a limited amount of time to work on each paper.

阅读大量的文献可以打下坚实的知识基础，但是学生们完成每篇论文的时间非常有限。

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Number one, its probability is low and based on past knowledge.

第一，它的可能性很低，但这是建立在过去知识的基础上。

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Knowledge is free on the Internet at a small but growing number of colleges and universities.

在一些高校的网站上，有免费的知识，这些高校为数不多，数量却一直在增加。

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It also said that a far larger number of staff had knowledge of the abuse and were unwilling to address the issue.

BBC: NEWS | UK | Scotland | Glasgow and West | 'Up to 40 staff' abused children

He says securing intellectual property (IP) ownership has become increasingly challenging because of the volume of open-source knowledge and the huge number of existing patents.

BBC: Protecting that great idea with a patent

Deep knowledge of a relatively small number of domains was required to manage these domains.

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