I'm not quite sure,because we have to turn to a metaphysical question that we've touched upon before,namely,can souls split?

我不太确定，因为要先提出一个以前说过的,形而上学的问题，就是，灵魂可以分裂么？

耶鲁公开课 - 死亡课程节选

and I don't know how much I've said so far but, yeah, totally different than here,

我不确定我说了多少不同之处，但是总的来说，跟这里有很多不同，

来自爱荷华 - SpeakingMax英语口语达人

If he had all of that,it's not so clear to me that it would be the wrong thing to say that, by golly,this is Napoleon.

如果他都拥有这些，那我就不太确定，这么说是否错误了，天哪，这是拿破仑。

耶鲁公开课 - 死亡课程节选

Yes, that's probably true as a general observation, whether it comes through clearly on these two-- this comparison-- I'm not quite so sure, but there--I wouldn't say there's a great deal of detail in the first one.

是,可能从一般角度观察是对的,不管是否是通过,这两者的对比得出的结论,我也不太确定,但我不会说,第一首里有大量的细节处理

耶鲁公开课 - 聆听音乐课程节选

To be honest, I'm not sure if you need to have gone to undergraduate

老实的说，我不确定你是否要有本科学历，

想成为律师的话 - SpeakingMax英语口语达人

And so I went through the math on this and said suppose I wanted to be really sloppy and I wanted to say if the delta X, the uncertainty in position is on the order of one angstrom.

我算完它,并说假如我想很草率,并且我想说如果x的增量，即位置的不确定度,相当于一埃。

麻省理工公开课 - 固态化学导论课程节选

I am not sure which one they actually say.

我不确定他们实际上说哪一个。

美式英语和英式英语 - SpeakingMax英语口语达人

As I say,I'm not sure whether that argument's right.

正如我说，我不确定这个论点是否正确。

耶鲁公开课 - 死亡课程节选