“但是财政形势更加严峻了。”—“啊，我真的不知道。”

"But finance is far more serious."—"Well I don't know really."

《柯林斯英汉双解大词典》

我不知道是什么起的作用，但是我确实觉得好多了。

I don't know what it was that did the trick, but I am definitely feeling much better.

《牛津词典》

我们先想去看长颈鹿，但是我们不知道怎样去。

First, we want to see the giraffes, but we don't know how to get there.

youdao

But it was there for over a thousand years, and we now know things to be a little different.

但是，它存在了超过1000年，我们现在知道的事情有点不一样。

麻省理工公开课 - 固态化学导论课程节选

I don't know if it's the biggest, but it's certainly one of the best collections of stuff

我不知道那是否是最大的，但是绝对是最好的收藏之一。

世界的宝物都聚于此 - SpeakingMax英语口语达人

I really have no idea whether it's a fact, and it's not important in My Fair Lady whether it's a fact.

我真的不知道这是不是真的，但是它在窈窕淑女里面真实与否并不重要。

耶鲁公开课 - 文学理论导论课程节选