Modern readers can, with some effort, discover that sixteenth-century teachers selected some seemingly dangerous classical texts while excluding other seemingly innocuous texts.

现代读者通过一些努力可以发现，十六世纪的教师选择了一些看似危险的经典文本，而排除了其他看似无害的文本。

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His jaw tightened, but he kept his smile in place with some effort.

他下巴一紧，但还是努力保持着恰如其分的微笑。

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With some effort and practice, these are things anyone can learn.

只要勤加练习，这些东西是每个人都可以学会的。

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Well a number of you have spent this past week playing with this particular tool which is a project the course has been working on for some time in an effort to make it easier and more social to actually shop for courses.

在过去的一周里,已经有一部分人开始使用这种特殊的工具了,这门课程一直在致力于这一工具的开发,目的是为了让课程变的更简单,选课更人性化。

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The various software empires have certainly started establishing themselves with some degree of effort in all these areas.

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And it's about the power of science to not only unlock new discoveries, but to unlock in the minds of our young people a sense of promise, a sense that with some hard work -- with effort -- they have the potential to achieve extraordinary things.

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