We know that these events are among the most cataclysmic that the sky holds; but we understand only-and approximately-the how, not the why.

我们知道这些偶发事件是在天空拥有的最大的灾难；但我们仅仅——大概了解——只知其然，却不知其所以然。

youdao

Why not have a day off? I'll hold the fort for you.

干吗不休息一天？我来为你代管。

《牛津词典》

The army has not yet proffered an explanation of how and why the accident happened.

军队还没有提供对该事故如何发生以及为什么发生的解释。

《柯林斯英汉双解大词典》

Everybody answered the questions well, intelligently, while he - why, dear me - he did not know anything, so to speak.

VOA: special.2009.01.03

So that would probably be de Broglie's answer for why, in fact, we're not observing the wavelength behavior of material on a day-to-day life.

所以那就可能是德布罗意关于,为什么我们无法再日常生活中,观测到物质的波动行为的答案。

麻省理工公开课 - 化学原理课程节选

Why call attention not so much to the difference between "few love her" and "none praise her" as the notion that none praise her?

他为什么要让大家注意到,“没有人赞扬她“和“几乎没有人爱她“,的区别呢？

耶鲁公开课 - 文学理论导论课程节选

Professor John Fabre, a former president of the British Transplantation Society, said that passing opt-out legislation in Spain was not the reason why the country had achieved a high donation rate.

BBC: Deadline for public to have say on organ donation law

The judge also said he could not understand why the government was not making a legal finding that Taylor had used "sophisticated means" to carry out the crime.

WSJ: Ex-Goldman trader pleads guilty in NY fraud probe

The red ball does so there is not reason why the pink should not do so.

BBC: Pink ball makes debut at Lord's