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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But the phrase "penny paper" caught the public's fancy, and soon there would be papers that did indeed sell for only a penny.

但是“便士报”这个词引起了公众的兴趣，很快就会有真的只卖一个便士的报纸了。

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After reading all the answers, the teacher said, "Here everyone only paid attention to the black dot, but no one wrote about the white paper."

看完所有的答案后，老师说：“这里每个人都只注意那个黑点，但是没有人写到白纸。”

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And there will be a different exam in the afternoon, but I think it only makes sense for you not to discuss the paper with people that are taking it in the afternoon.

在下午会有个不同的考试，但是我想仅仅是对你有意义,而不是和别人,讨论下午正在考的试卷。

麻省理工公开课 - 固态化学导论课程节选

A lot of times when people draw them, they even only draw the big lobe just to keep their paper looking nicer, but there is that little tiny lobe on the other side.

很多时候当人们画它时，为了使图更加美观,他们甚至只画大叶，但另外一面是有一个小叶的。

麻省理工公开课 - 化学原理课程节选

An SIV is a company of a sort that invests in assets and they issue something like asset-backed commercial paper, but it's not a real company because it only exists as an organization sponsored by some bank.

IV类似从事资产投资的公司,同时也发行类似资产担保商业票据的证券,但它不是一家真正的公司,因为它只是由某家银行建立的一个组织

耶鲁公开课 - 金融市场课程节选

Existing laws require companies to reply to requests for personal data, but only on paper.

ECONOMIST: Britain wants to lead the world in exploiting consumer data

The take-away was that a strategy may play out on paper, but the only way to truly test the validity of your product is to put it in front of customers.

WSJ: Lessons GrubHub's CEO Learned Using Freemium

But only on paper.

FORBES: Sequester, We Hardly Knew Ye