我不知道对不对，但如果真是，用户花的一半钱都是盈利。

I don't know if that's true but, if so, more than half the user cost was profit.

youdao

不知道我说的对不对，但是勇气应该是当一个人处在困境的时候却表现得他真正的相信他自己是对的。

Tell me if I'm wrong, but courage is when a man in a difficult situation acts as if he truly believes he's right.

youdao

我不知道她到底对不对，但我发现她的研究有一部分还是很有新意的：我们是什么时候开始担心孩子们把过多的时间花在电脑上的？

I don't know if she's right or not, but I do find one aspect of her work striking: Since when did we start to worry that the social kids were spending too much time with computers?

youdao

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