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。
To argue for a cause-and-effect relationship, scientists must attempt to explain why and how a connection could occur.
想要证明因果关系，科学家们必须尽量解释这种联系可能出现的原因和方式。
It doesn't necessarily explain how it became so rare, but it explains why it doesn't increase.
这不一定能解释它如何变得如此罕见，但解释了它为什么不增加。
Understanding how perception becomes intertwined with social decision making shows why successful iconoclasts are so rare.
理解了认知如何与社会决策交织在一起，就能明白为什么成功的反传统者如此罕见。
First of all, it seems that a successful scientist is full of curiosity—he wants to find out how and why the universe works.
首先，一个成功的科学家似乎都充满了好奇心——他想知道宇宙是如何运作的以及为什么会这样。
If you want your blog to be read by more people, ask yourself why first before you ask yourself how.
如果你想让你的博客被更多的人阅读，先问问自己为什么，然后再问问自己该如何去做。
Nobody knows how they do it with such accuracy, or why eels spawn where they do.
没有人知道它们如何做到那么准确，或是鳗鱼为什么要在大海里产卵。
Why and how can it take place?
这件事为什么会发生，它又是如何发生的呢？
Why shouldn't she go and see how many doors she could count?
她为什么不去看看她能数出多少扇门呢？
How interesting! Tell me, why do you want to leave your present job?
真有趣！你可以告诉我你为什么要辞掉现在的工作吗？
Why does their behavior indicate more of a concern with how much energy they expend than with being exposed to predators?
为什么它们的行为表明它们更关心的是消耗多少能量而不是担心暴露在捕食者面前呢？
They are wondering why Act Two is odd and how it differs from Act One.
他们想知道为什么第二幕很奇怪以及它和第一幕有什么不同。
Their waste tracking technology means that caterers can see how much food is being wasted and why.
他们的废品追踪技术意味着餐饮公司可以看到有多少食物正在被浪费，以及它们为什么被浪费。
Here are some of the important proposals in the House and Senate bills to try to address those problems, and why it is hard to know how well they will work.
以下是众议院和参议院法案中试图解决这些问题的一些重要建议，以及很难知道它们的效果会如何的原因。
How and why did the native people of Nazca create these marvelous designs?
纳斯卡的当地人是如何创造、出于什么原因创造出这些令人惊叹的设计的呢？
How did this tremendous development take place, and why did it happen in the Teotihuacán Valley?
这一巨大的发展是如何发生的，又是为什么会发生在特奥蒂瓦坎山谷？
Too many people in this country, including some among our elected leadership, still do not understand how science works or why robust, long-range investments in research vitally matter.
在这个国家有太多的人，包括我们选举出来的部分领导人，仍然不明白科学的运作方式，也不明白稳健、长期的投资对研究来说的重要性。
Too many people in this country, including some among our elected leadership, still do not understand how science works or why robust, long-range investments in research vitally matter.
在这个国家有太多的人，包括我们选举出来的部分领导人，仍然不明白科学的运作方式，也不明白稳健、长期的投资对研究来说的重要性。
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