The technical expression of that in philosophy is common knowledge, which I can never spell, so I'm going to wing it.

在哲学上叫做共同知识,我不知道拼写对不对,我看一下

耶鲁公开课 - 博弈论课程节选

I don't know the philology side, I don't know what disables to metaphysical questions.

我不知道者从语言学上来说对不对，我也不懂从形而上学角度看,有什么问题。

耶鲁公开课 - 死亡课程节选

I was just going to--I don't know if this is one of the things, you can eat it and you can metabolize it and trap the energy.

我想说,我也不知道说的对不对,可以食用,被代谢,并从中获取能量

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

I don't know, John, if you'd agree, right?

我不知道，John，如果你同意，对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

Don't know,right?

不知道了对不对？

耶鲁公开课 - 死亡课程节选