An extraordinarily important study skill is knowing how to mark a book.

知道如何在书上做标记是一个非常重要的学习技巧。

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Marking a book is a useful skill, but it's important to do it right.

在书上做标记是一项有用的技能，但重要的是要做对。

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However, consider other USES of your time which might be more rewarding. Learning a new skill, meditation, reading, writing that book you've been wanting to write.

但是，想想时间其实可以用来做更有意义和回报的事情：学习新技能、冥想、阅读、开始你早已计划的写作。

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Aristotle's Politics is a book about the kind of knowledge requisite for that kind of skill.

亚里士多德的《政治学》,是一本关于这种技能,所需之必备知识的著作。

耶鲁公开课 - 政治哲学导论课程节选

For example, school programs that reward students with money, prizes, or privileges for academic accomplishments or effort are more effective if they reward students for mastering a certain skill, such as reading a book or solving a problem.

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Another is that, even for a bank that had the skill and courage to run a proper loan book, Russia's legal system is full of holes.

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But this is a particular skill that I have never seen anyone learn from a book, an article, or from a shrink-wrapped kit sold on a late-night infomercial.

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