The footfall was an uncertain and shuffling one.

脚步声慢吞吞地，象拖着步子在走。

What matter it though life uncertain be to all?

何必去管它，人生总无定？

We may leave our partner uncertain where they stand or deeply aware of their inadequacies.

我们让伴侣不知所措　或不断让他知道自己缺陷。

Whether all this ingenuity unravels any cosmic truth is uncertain.

所有这种独出心裁否能解开宇宙真相，还不确定。

He made uncertain movements, because everything in his head was vague and uncertain.

他茫然地走走去，因为他脑子里一切都模糊而不确定。

Since the inputs into our models are uncertain, naturally, their outputs will be uncertain too.

由于我们模型输入不确定，自然地，它们输出也不确定。

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。

That the evidence was inconclusive, the science uncertain?

怀疑者们（还）坚持（吸烟结果）还没定论，科学也不够确定。

The future of the ISS is uncertain.

国际空间站不确定。

There was a short mumbled argument, punctuated with curses, and uncertain feet ascended the stairs.

外面传一阵模模糊糊争论声，夹杂着咒骂声，接着就有人摇摇晃晃上台阶声音。

Being confused and uncertain around such concepts.

混淆和周围这样概念不确定性。

How that process will work is uncertain.

这个过程将如何进行还不确定。

The two of you made us uncertain!

你俩把我们搞得" 不确定" 了！

Talking about the future is always uncertain.

谈论总不确定。

But 'could' sounds a little more uncertain.

但 could 听起更不确定一些。

The election has left Israelis confused and uncertain.

这次选举让以色列面临疑惑和不确定性。

But as we know; the future is uncertain.

但正如我们所知，不确定。

The future for Ayla is hopeful but uncertain.

艾拉充满希望，但也充满不确定性。

It's uncertain how many people were injured.

目前还不清楚受伤人数。

So I was very nervous and uncertain at first.

因此，我一开始就感到神经过敏和心神不定。