I'm sorry but I don't think I know you.

很抱歉我想我并不认识你。

youdao

But I don't think I know what it means anymore.

但我不认为我知道这意味着什么了。

youdao

But now, I don't think I know them as well as I used to.

但现在，我认为我已经不像过去一样了解他们了。

youdao

I don't think so. They are strangers. They don't know him at all."

VOA: standard.2010.03.28

I don't think I know anyone who had an extensive experience in the war.

我觉得我认识的人当中,没有人在战争中有很多的经历。

普林斯顿公开课 - 人性课程节选

People, but I don't know, at the same time, I think people are really interested in what they're doing.

那里的人......我不太清楚，不过同时，我觉得那里的人们都抱着浓厚的兴趣在做自己的事。

最喜欢的一门课 - SpeakingMax英语口语达人

She replied 'I don't know, I think so'.

BBC: April Jones case: Mother's 999 call played to jury

Dr. NIEDERDEPPE: Well, I think - we don't know for sure, but I think there are at least three things that may be going on here.

NPR: Confronting Misconceptions About Cancer Prevention

They would tell you, we don't really know, but in fact they cannot know because I don't think these charges have any relations to underlying costs.

NPR: 6 min 38 sec