But what I should also report to you is that I think there is a widespread consensus among most people that study the subject.

我之所以给你们整理出来是因为,对于这方面的研究有一个比较统一的观点

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But also you should have some kind of a resistance element

但是你也应该包括一些拥有抵抗元素的运动，

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if you don't want to use that, you can also derive it as we did every time, it should intuitively make sense how we got there. But the exams are pretty short, so we don't want you doing that every time, so we'll save the 2 minutes and give you the equations directly, but it's still important to know how to use them.

吸收的和发射的，如果你不想用公式,你也可以每次都向我们这样推导它,很直观的就能得到结果，但考试时间很短，我们不希望你们每次都推导,所以我们会直告诉你，让你节省2分钟，但知道如何应用它十分重要。

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