His friend was killed and he knows he is lucky to be alive.

他的朋友丧了命，他知道自己还活着是侥幸。

《牛津词典》

He says it's because he lives on the moor so much and he knows their ways.

他说那是因为他住在沼地里时间久了，他知道它们的习性。

youdao

I know this is a joke, and he knows I know, so even as he gets up to leave, I keep waiting for the wink.

我知道这是个笑话，他也知道我知道，所以即便他起身准备离开，我还在等他给我使眼色。

youdao

And he knows, and all of us know, that he is participating in the closing borders and is participating in the siege."

VOA: standard.2010.06.01

We know that charge is equal to the integral of current times the time. And he knows the current, he knows how much time and then he weighs this.

我们知道电量等于电流,对时间的积分，他知道电流，他也知道时间，然后他测量这个。

麻省理工公开课 - 固态化学导论课程节选

and he knows they deserve punishment.

他知道，他们确实该罚。

耶鲁公开课 - 旧约导论课程节选

Certainly in style: Thompson is folksy, genial and he knows how to work a camera.

FORBES: Fred Thompson Will Run

"He's been out there campaigning, and he knows the American people don't want that, " Daley said.

CNN: Bush, Gore spin debate their way as campaigning resumes

And he knows that it's not enough for just some of us to prosper.

CNN: Obama: Time to reclaim America's promise