我不知道这是什么意思，但上面还说。

I don't know what that means, but then it says.

youdao

我知道你不知道这是什么意思，但耶。

I know you don't know what that means but yea.

youdao

童子却不知道这是什么意思，只有约拿单和大卫知道。

The boy knew nothing of all this; only Jonathan and David knew.

youdao

If you don't have the units, then if you say the answer is 19, then we don't know what it means.

如果没有的话,比如你的答案是十九,那我们就不知道这是什么意思

耶鲁公开课 - 基础物理课程节选