I know that you know that I know.

我知道你知道我知道。

youdao

I know that you know that I know.

我知道你知道我所知道的。

youdao

I know that you know him.

我知道你认识他。

youdao

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, I had no idea that I was, you know, that I was doing what I was doing and it became a scratch.

NPR: The South Bronx Sound, from Mambo to Hip-Hop

Do you know if the President -- I know that the President -- I know you guys go through these letters.

WHITEHOUSE: Press Briefing

You know, I don't know if I want to do that, or you know, if I might as well just take a year off and, as you were talking, maybe get an internship or work or something.

NPR: Ask Amy: Responding to the Thin Envelope