Is it not the answer to why all matters are in motion?

这不就是为什么一切物质都在运动的答案吗？

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When a petrol station burns down, you don't just want to know who dropped the cigarette; you want to know why all the combustible fumes escaped.

当一座加油站被烧毁，你不仅想知道是谁扔下了烟头，你还想了解所有易燃气体的泄露原因。

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Here, Gill Adams, one of the organizers of Silver Surfers' Day, gives her top ten reasons why all older people should get connected.

在这里，“银发网上冲浪者”活动的组织者之一吉尔·亚当斯给出了她认为老年人应该上网的十大理由。

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They do not know why all these things were found together in one place.

VOA: special.2010.08.03

You said, you didn't call us up when we weren't paying any dividend and now we're still paying more than we used to, why all this alarm?

过去不分红的时候,你们什么都没说,而现在我们的分红比过去还多,你们紧张什么

耶鲁公开课 - 金融市场课程节选

And that's why all those reactions, first of all, in some sense what I put up was kind of a trivial statement in actual fact saying they all happen spontaneously because I didn't specify what we were starting with exactly, what concentrations we were starting with.

首先这就是为什么所有的这些方程，在某种程度上,我举得这些例子说它们自发产生,这是一个琐碎的陈述,因为我没有说明，我们从什么地方开始。

麻省理工公开课 - 热力学与动力学课程节选

That's why all these politicians are doling out cash awards to the cricket players.

BBC: Resentment of India's hockey team

So, why all this hype around ads for diapers and other baby products, for goodness sake?

FORBES: Target, Evenflo, Kimberly-Clark Throw Out Baby Sweet Talk

The stakes couldn't be higher, which is why all eyes will be on Brussels this weekend.

BBC: EU referendum: Cameron to impose three-line whip