How do I know what he's thinking? I'm not telepathic!

我怎么知道他在想什么？我又不会传心术！

《牛津词典》

How do I know its charge distribution?

我怎么知道它的电荷分布呢？

youdao

How do I know if it's swine flu?

我怎么知道是不是猪流感？

youdao

Let us say I want to sell my car but I do not know exactly how much it is worth.

VOA: special.2009.04.12

So I mean philosophy can talk about how do we know we got a table here between us. Right?

比如，哲学可以告诉我们是怎么感知到,我们之间有一个桌子，对不对？

普林斯顿公开课 - 人性课程节选

And the third thing I need to decide is how do I combine? You know, point out to you in the binary search case, combination was trivial. The answer to the final search was just the answer all the way up.

第三个问题是我需要决定如何进行合并？,就你们所知的，在二分查找中所打印出来的,合并的过程是非常简单的,最后查询的结果,就是一路上来所以的结果。

麻省理工公开课 - 计算机科学及编程导论课程节选

Mr. THOMPSON: I don't know how long Mr. Rumsfeld intends to stay but I do know this - he's not going to leave under fire.

NPR: Donald Rumsfeld, Secretary of Self-Defense

I'm also the creative head: I have to be free to make my decisions, and I have already proven that I know how to do it.

WSJ: Fashion Designer Jil Sander Makes a Comeback

Legend has it, I know how to do it.

BBC: In quotes: Italy's Silvio Berlusconi in his own words