我想去青海博物馆，但是我不知道怎么去。

I want to go to Qinghai Museum, but I am not sure how I can get there.

youdao

我很愿意和你一起走，但是我不知道怎么下去。

I will willingly go away with you, but I do not know how to get down.

youdao

但是我不知道自己是否还需要它。

But I didn't know if I wanted it.

youdao

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

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

But they don't I don't know, it's just -there isn't enough initiative in the world, not many people do it.

但是他们没有这样做,我不知道,也许只是,主动性不够,没什么人这样做

耶鲁公开课 - 金融市场课程节选