Answer me this: how did they know we were here?

回答我这个问题：他们怎么知道我们在这儿？

《牛津词典》

How did they know Jennifer's phone number?

他们是怎么知道珍妮弗的电话号码的？

youdao

How did they know I was on that train?

他们怎么知道我在那列车上的？

youdao

And they let others know it. They sometimes made statements about how they did not have to obey the law.

VOA: special.2010.02.25

We have people inventing them, but even the ones that are invented aren't very helpful, because it's awfully hard to know how they did what they did.

有人试图还原古代战争,但是得出的结果并没有太大的意义,因为我们对此实在是知之甚少

耶鲁公开课 - 古希腊历史简介课程节选

We don't know how the change came about or if--some people question if they ever really did have kings, but the picture I want you to have is that's not the tradition.

我们不知道这个变化是怎么发生的,如果...有人质疑如果他们真的有过国王,不过这里我想告诉你们的是,他们没有这样的传统

耶鲁公开课 - 古希腊历史简介课程节选

How did they not know three months ago that this would happen?

FORBES: Budget, or Fudge-It?

Most people said they did not know how they would vote, or declined to share the information.

ECONOMIST: The defence vote in Portsmouth: England expects | The

Bono and the Edge knew how to write rock songs, but did they know how to write songs for musical theater?

FORBES: No Superheroes Were Harmed in the Writing of This Blog Post