我不知道钱都花到什么地方去了！

I don't know where the money goes!

《牛津词典》

不知谁用蜡笔胡写乱画，桌面上都涂满了。

Someone had scribbled all over the table in crayon.

《牛津词典》

我曾在多项任务中都处于危险的境地，但不知怎么地都化险为夷了。

I had skated on thin ice on many assignments and somehow had got away with it.

《柯林斯英汉双解大词典》

When somebody invented the automobile, before you knew it everyone was driving automobiles and they all looked pretty much the same.

有人发明了汽车,不知不觉,每个人都开上汽车了,而且那些汽车外形看起来都差不多

耶鲁公开课 - 金融市场课程节选

But it's amazing, that every year you find somebody coming up with a way of going around the second law and somehow convincing people who are very smart that this will work.

但是很令人惊奇，每年你都能发现,有人宣称找到了,绕过第二定律的方法,还不知怎么地就说服了,一些非常聪明的人,让他们以为这个真的管用。

麻省理工公开课 - 热力学与动力学课程节选

I don't know if I mentioned I assume you know about the Federal Deposit Insurance Corporation?

不知我有没有提到过,你们都知道,联邦存款保险公司吧

耶鲁公开课 - 金融市场课程节选