I know that there is absolutely no need to give out definitions of a true friend.

我认识到没有必要给真正的朋友下定义。

youdao

How do I know that there are trees?

我怎么知道树木是存在的？

youdao

How do I know that there are birds?

我怎么知道鸟是存在的？

youdao

"I know I personally got my job that way. And the people that worked there before me got their jobs that way.

VOA: special.2010.06.11

I know that there had been religious traditions that had been taught and believed in this possibility.

我知道有些宗教理念,会去教人们,相信这种可能。

耶鲁公开课 - 死亡课程节选

How do I know that there is a lectern?

我怎么知道讲台是存在的

耶鲁公开课 - 死亡课程节选

And I know that there may be some people who are skeptical about that.

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"All across America, I know that there's a lot of anger right now, " Palin said.

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In fact, I know that there will be plenty of disagreement and different ideas.

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