这就解释了为什么当我们看到像塑料垃圾袋和带轮行李箱这些让生活更方便且看似简单的发明时，我们的反应是：“为什么以前没有人想到这个?”

This accounts for our reaction to seemingly simple innovations like plastic gargabe bags and suitcases on wheels that make life more convenient: "How come nobody thought of that before?"

youdao

这就解释了为什么当我们看到像塑料垃圾袋和带轮行李箱这些让生活更方便且看似简单的发明时，我们的反应是：“为什么以前没有人想到这个？”

This accounts for our reaction to seemingly simple innovations like plastic garbage bags and suitcases on wheels that make life more convenient: "How come nobody thought of that before?"

youdao

对于我们中的大多数人来说，知道为什么石油钻井平台发生爆炸，没有多大的实际意义。 但它确是一个奇怪和独特的事件，人类似乎天生就想要知道为什么这种奇怪的事件居然会发生。

There isn't much practical significance for most of us to know why this oil rig exploded, but it is a strange and unique event, and humans seem wired to want to know why these strange events occur.

youdao

That is why this says atomic number, but for most intents and purposes we can say this could be atomic mass.

那就是为什么这里说原子序数，但如果没有意图和目的,我们就说是原子质量。

麻省理工公开课 - 固态化学导论课程节选

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

Why do you manage to get some cooperation between you and your roommates even without a written contract?

为什么即便没有书面合同,你一样可以和你室友合作得愉快

耶鲁公开课 - 博弈论课程节选