当金星开始穿过太阳的圆盘时，它看起来有斑点，不是圆形的——这使得确定时间变得困难。

When Venus begins to cross the Sun's disc, it looks smeared not circular—which makes it difficult to establish timings.

youdao

这是“邦诺”罕见的不确定时期。

It is a rare moment of uncertainty for the company.

youdao

我回头给你电话再确定时间。

B: I’ll give you a call later on and we can decide the time.

youdao

How many people here are sort of complicated, ambidextrous, don't know, "Bit of the right, bit of left" people?

有多少人是有些不确定,左右都行,说不清,"时左时右"

耶鲁公开课 - 心理学导论课程节选

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

And so it appears, the three conversations end, Book I ends with uncertainty about what justice is.

而这显露出在三段会话结束时，在第一册结束时,正义仍是无法确定的概念。

耶鲁公开课 - 政治哲学导论课程节选