我不确切知道。

I don know for sure.

youdao

我不确切知道。

I don't know for sure!

youdao

我不确切知道这件事。我认为即使那些最了解内情的人也不见得会告诉你这件事。

I don't know about it exactly. I don't think even those who are in the swim can tell you about it.

youdao

He had a suitcase that--I don't know exactly, something like this--had a strap that you'd pull it along and it had four little wheels on the bottom and it worked.

他的行李箱。。。我知道的不太确切，应该是这样的，那上面有一条带子,你可以拉着它,而箱子底部有四个小轮子可以使箱子滑动。

耶鲁公开课 - 金融市场课程节选

I don't really care what key he's in 'cause I don't have absolute pitch, but I can find well, maybe it's a I,VI,IV,V,I chord progression or a I, I IV V I V,I progression or I,IV,V,I.

我也不需要知道他所用的调号，因为我不知道确切的音高，但是我能听出其中的和声，可能是一个，I，VI，IV，V，I级的和声进行，或者，是一个I，V，I的进行，或者。

耶鲁公开课 - 聆听音乐课程节选