This is why we study astrology!

这就是我们学习占星的原因！

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Why we study English?

我们为什么学习英语？

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The reason why we study English is that it's an international language.

我们必须研读英语的原因是，英文是国际语言。

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Now there are of course biases when we study ourselves which is why it's not enough to just study the self.

当我们研究自己时当然会有偏颇,这就是为什么只研究自己是不够的。

哈佛公开课 - 幸福课课程节选

That's why we'll do some research or study research as well as do some search-- searching inside us.

那就是为什么我们除了探究我们的内心外-,也会做一些研究或调查研究。

哈佛公开课 - 幸福课课程节选

Why, then, should we not study the acquisition of a cognitive structure like language more or less as we study some complex bodily organ?

我们为什么不应当,像研究某些复杂身体器官那样,去或多或少地研究,像语言这样的认知结构的习得

耶鲁公开课 - 心理学导论课程节选

You might ask yourself: Why do we need a study to report on a government study?

FORBES: New GAO Report Makes the Case for a More Open Policy on Foreign-Born Professionals, But You Need to Read it Closely to Know Why

Hind-limbed snakes are key fossils in this debate and that is why we really need to study them in detail.

BBC: Studying how snakes got legless

This study, however imperfect because of its focus on a surrogate endpoint, demonstrates why we need to generate more information about how drugs compare.

FORBES: AstraZeneca Study is Good News for the Public, Bad News for AstraZeneca