乐观和悲观都是人的个性，它会影响人们对不确定性的反应，但也会受到不确定性的影响。

Optimism and pessimism are personality traits that condition people's reaction to uncertainty, but they are also influenced by uncertainty.

youdao

这里有两个不确定因素-，也就是时间和距离的不确定性。

So there are two uncertainties involved — the distance and the timing uncertainty.

youdao

不确定性趋向某一方面，和不确定性趋向其它方面，未来所成呈现的将会是截然不同的样子。

If the uncertainty leans one way, the future plays out drastically different than if it leans the other ways.

youdao

The first is, that while God's promise is sure, the manner and the timing of its fulfillment is quite unpredictable.

首先是，上帝的承诺是确定无疑的，但实现的方法和时机却都是不可知的。

耶鲁公开课 - 旧约导论课程节选

These are long-term government bonds and I--now these are--since they're long-term, they have some uncertainty and variability to them.

这些是长期政府债券,由于它们是长期的，就存在不确定性和变化性。

耶鲁公开课 - 金融市场课程节选

This is the plus or minus, so the product of the uncertainty and the momentum.

是加或减，所以不确定度和动量的结果。

麻省理工公开课 - 固态化学导论课程节选