And you sounded a little unsure and tentative.

你听起来有点不确定和犹豫。

They are more fallible, it's definitely an uncertain time.

他们更容易犯错误，这一个不确定时代。

This was a speech to college students fearful about their future in an uncertain world.

这对一群即将踏入一个充满不确定世界、对未来充满恐惧学生们所做演讲。

Furnished, if you're not sure, means furniture.

如果你不确定，配备齐全指家具。

But NASA's astronomers remain unsure whether it is predominantly gaseous, liquid or solid.

但NASA文学家们还不确定它主要成分气体，液体还固体。

You're worth something. It's something in the world, but I know you're worth something.

你有你价值所在。虽然不确定什么，但我知道你有你价值所在。

It means a number bigger than one, but it's indefinite.

它意思比一更大数字，但它不确定。

But experts aren't sure what's behind the increase.

但专家并不确定原因所在。

Whether all this ingenuity unravels any cosmic truth is uncertain.

所有这种独出心裁解开宇宙真相，还不确定。

If you're not sure, try to listen to other people around you.

如果你不确定，就试着倾听你周围人。

If you're not sure, aim for a neutral tone.

如果你不确定，就使用中性语气。

I'm not sure how accurate the video game is compared to real-life situations.

我不确定这款电子游戏和现实生活场景相比有多么精确。

So you are not sure which to go for?

所以你不确定去哪一个？

She was unsure if she was communicating clearly.

她不确定自己表达清楚了。

" Was he killed by an Auror? " Harry asked tentatively.

“他被傲罗杀死吗？”哈利不很确定地问。

Yeah, I think that's it. Zucchini. I'm not even sure.

对，没错。就这个。其实我不太确定。

Generally, if you aren't sure, it's better to be less direct.

通常来说，如果你不确定，最好还委婉些。

Their income is uncertain when they are at the mercy of the assessment system.

当收入受评估系统支配时，收入不确定。

Are you sure you don't recognize him?

您确定不认识这个人？

Make sure we're not breaking any laws.

确定不触犯法律。