你看不见它，闻不到它，也听不到它，并且人们对于如何准确地定义它，或者查明它的来源也存在分歧。

You can't see it, smell it, or hear it, and people disagree on how precisely to define it, or where exactly it comes from.

youdao

对于如何对付美国的敌人和对手，他需要更加明确和坚定：当俄罗斯入侵格鲁吉亚时，他的第一反应就是胡扯。

He needs to be a lot clearer and firmer about how he will deal with America's foes and rivals: his first instinct when Russia invaded Georgia was to waffle.

youdao

这对于如何设计新市中心是个绝佳的反面教材。

It is a classic example of how not to design a new city centre.

《牛津词典》

The other thing that we took note as is what happens as l increases, and specifically as l increases for any given the principle quantum number.

另外一个我们要注意的是,ｌ增加时如何变化，特别是对于某个给定的,主量子数ｌ变化时如何变化。

麻省理工公开课 - 化学原理课程节选

As we might put it somewhat misleadingly, what is it for "two" people to really be the same single extended-through-time person?

对于“两个“人、,如何才是同一个贯穿时间的人,可能有一些误导的观点？

耶鲁公开课 - 死亡课程节选

And where we where at the start of the 20th Century in the late 1890's is that we were at a place where there was great confidence in our understanding of the universe, and our understanding of how all matter worked.

0世纪开始讲起,在19世纪的九十年代,人们对于自己,对自然的理解,对自然所有物质,如何工作的理解十分自信。

麻省理工公开课 - 化学原理课程节选