I've passed through Grand Central Station when filming was happening. I don't know what they were filming though.

拍摄的时候我经过中央车站。不过我不知道他们在拍什么。

youdao

I don't know what the doctors diagnose when someone isn't freezing even though he should be freezing.

我不知道一个人在该冷时而没有冷的情况下那些医生们会作出什么样的诊断出来。

youdao

Ordinarily, we just spontaneously say, "I know what that means," or if we don't know what it means, we say, "It must mean something even though I don't know what it means."

一般地，我们会不由自主地说，“我知道那是什么意思“,或者，如果我们不知道它是什么意思，我们会说，“它一定有某种意思，虽然我不知道究竟是啥意思

youdao

I've passed through Grand Central Station when filming was happening. I don't know what they were filming though.

有一次我从那儿经过，正好有部电影在拍。但我不知道他们在拍什么电影。

电影里的中央车站 - SpeakingMax英语口语达人