If cycling each day can make you healthier, why not commit yourself to it and have a better life?

如果每天骑自行车可以让你更健康，为什么不承诺每天坚持骑车，过上更健康的生活呢？

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It is also the reason why when we try to describe music with words, all we can do is articulate our reactions to it, and not grasp music itself.

这也是为什么当我们试图用语言描述音乐时，我们所能做的只是表达我们对音乐的反应，而不是领会音乐本身。

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If India can have any technology it wants, Iran asks, why not us?

如果印度能拥有他们想要的任何技术，那么伊朗会问，为什么我们不能？

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So, we can think about why is it that these are not equal.

我们可以想一想它们为什么不相等。

麻省理工公开课 - 化学原理课程节选

You remember in the first lecture I said there's a difference between the history of criticism and theory of literature, one difference being that the history of criticism has a great deal to do with literary evaluation: that is to say, why do we care about literature and how can we find means of saying that it's good or not good?

你们还记得吗，第一节课我说过,文学评论历史和文学理论有一个重大区别，那就是文学评论的历史,很大程度上与文学评估有关：,意思就是我们为什么要关心文学,还有我们怎么能说一部作品是好还是坏？

耶鲁公开课 - 文学理论导论课程节选

So, we need to fill our octet for selenium, so 1, 2, 3, 4.So, this is our Lewis structure here, hopefully you can see why it's not linear.

我们要填满硒原子的八配位，所以1，2，3，4。这就是Lewis结构，希望你们能看出来为什么它不是直线型的。

麻省理工公开课 - 化学原理课程节选

Why can it not co-ordinate its fight against organised crime and drugs?

ECONOMIST: Europe's mid-life crisis

Instead, the State Board still feels compelled to compete with SEC-regulated money managers--and why not if it can play by different rules?

FORBES: Expert View

Honda and Toyota can do it why not others?

FORBES: The 'Health Care Fiscal Cliff' Could Take The Economy Down