Dear John: I don't know where have you been, but one thing I know for myself and both we know is "I'll see you soon".

亲爱的约翰：“我不知道此刻你在哪里，但是有一件事我们彼此都深信不疑：我们就快见面了。”

youdao

I didn't know, but one thing was certain: this person was suffering.

我不知道，但是有一件事情是肯定的：这个人一定很痛苦。

youdao

I had always been emphatic that I didn't know whom I would marry, but one thing was for sure — he would not be a farmer or dairyman!

我一直都是态度坚决地表明我不知道要嫁给什么样的男人，但有一点是肯定无疑的——他不会是务农的或养乳牛的！

youdao

- I like this one.- ANGELA: That's cool. But, like, I don't know aboutthe one-shoulder thing.

VOA: standard.other

But there's one thing to think you know, you think of I don't know if you've seen the Monty Python's skit.

但是另外，当您想到,不知道您看没看过Monty，Python的滑稽短剧？

普林斯顿公开课 - 人性课程节选

Because I stand up here and I talk about the one or more than one thing I know about and so it's easy to infer that I must know a lot but in fact by the time this semester ends I will have tell you told you everything I know.

因为我站在讲台上,我给你们讲我知道的知识,所以你们很轻易就推断出我一定懂很多,但其实到了学期末，我要告诉你们,我会的都已经教给你们了。

耶鲁公开课 - 心理学导论课程节选

But one thing I know for sure -- since he took office, Barack has been fighting for us.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event

But the one thing I know about community organizers is that they know how to organize communities.

CNN: Commentary: GOP shouldn't knock community organizers

But one thing I do know: Podcasting will be much beyond what we are seeing right now.

FORBES: Podcasting Profits