The conclusion of this parable seems so violent perhaps because the lesson to be learned from the parable is so uncertain.

这个故事的结尾看起来太残酷了,可能因为这个寓言想要教给我们的东西太不确定。

耶鲁公开课 - 弥尔顿课程节选

you could leave your response to the invitation slightly open-ended by saying you're not sure.

你可以表示你不确定，开放性地回复这个邀请。

I don't know 课堂 - SpeakingMax英语口语达人

The uncertain status of divine providence here, I think, is made clear by its figuration as a moon.

这里神圣的天意的不确定的地位，被月亮这个比喻表现的更为清晰。

耶鲁公开课 - 弥尔顿课程节选

Now, I'm not sure what kind of video we're talking about, and I'm not sure if the lecture will be the internet when we're all done. But nonetheless I'm gonna call this the next big thing-the video internet .

呃，我不确定我们要谈关于什么样的视频,我也不确定当这个讲座全部结束时,还是不是关于网络，但尽管如此,我还是要叫它为下一重大事件，网络视频。

麻省理工公开课 - 媒体、教育、市场课程节选

NO So that the more complete answer to the question is that no, we're never going to be able to observe that because of the uncertainty principle it's not possible to observe a velocity that's this slow for a macroscopic object.

所以这个问题的完整答案是，由于不确定性原理,我们不可能测量到这么慢的,宏观物体的速度，希望这个解释。

麻省理工公开课 - 化学原理课程节选

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

Oh, I'm sorry. -I didn't like the ending.

你确定？，-是的，我非常不喜欢这个结局。

麻省理工公开课 - 电影哲学课程节选

Heisenberg gave us the uncertainty principle, which we will visit later.

海森堡告诉我们不确定性原理，我们之后会看这个。

麻省理工公开课 - 固态化学导论课程节选