Zhuang Zi smiled, "but you are not me. How do you know that I don't know the fish's feelings?"

庄子笑了笑：“你不是我。怎么知道我不知道鱼的感受？”

youdao

I just want to let you know that I will always be there for you in your hour of need.

我只想让你知道当你急需帮助的时候我会一直在你身边的。

youdao

How do you know that I arrived?

你怎知我来了呢？

《新英汉大辞典》

But it's a lot easier than picking up trash, you know,and doing that, so,you know,I gave it a try."

VOA: special.2010.06.03

Common knowledge is: "I know something, you know it, you know that I know it, I know that you know it, I know that you know that I know it, etc., etc. etc.: an infinite sequence.

共同知识是指,我知道一件事,你也知道这件事,你知道我知道这件事,我也知道你知道这件事,我知道你知道我知道这件事,以此类推,一个无限的循环

耶鲁公开课 - 博弈论课程节选

So I just want, you know, I feel like that experience would be enriched if I, you know, learned the language.

我始终觉得，如果我会韩语的话，我在韩国的经历会更加丰富。

学习外语的原因 - SpeakingMax英语口语达人

You know that I know that you will see 'cause that was once me.

NPR: James Brown's Christmas Music

You know that I say what I mean, and I mean what I say.

WHITEHOUSE: The White House

Some of you know that I have a military aide that travels with me wherever I go.

WHITEHOUSE: President Obama Speaks about Health Reform in Iowa City