我们不太确定这颗彗星是否会错过地球。

We were not altogether sure that the comet would miss the Earth.

《柯林斯英汉双解大词典》

恐怕我有点糊涂了，不太确定从哪儿开始。

I'm afraid I'm a little muddled. I'm not exactly sure where to begin.

《柯林斯英汉双解大词典》

在今年大多时间里，他的政治前途都显得不太确定。

His political future has looked iffy for most of this year.

《柯林斯英汉双解大词典》

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

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

Now I don't know, I may be different than other people, but I think organic chemistry is really interesting.

但我不确定,也许我和他人不太一样呢,我认为有机化学很有趣

耶鲁公开课 - 金融市场课程节选