我曾经犹豫不决，现在我却完全不确定了。

I used to be indecisive, now I'm not sure about that anymore.

youdao

我完全不确定发生了什么，我也不相信这场比赛是我想停就停的。

I'm not entirely sure what's happening and I don't believe I could stop this race if I wanted to.

youdao

一次成功的回避往往会使提问者在被提问者回答完之后完全不确定自己本来的问题是什么。

A successful dodge leaves readers unsure of what the original question was by the end of the speaker's answer.

youdao

A 100% uncertainty in the position 15% gives rise to a 15% uncertainty in velocity.

从完全不确定的位置,到速度的不确定度为。

麻省理工公开课 - 固态化学导论课程节选

In fact, we can never be fully free of the fear and of the anxiety and uncertainty of the state of nature, even within to some degree of fully constituted civil society.

实际上，我们完全可以,脱离恐惧焦虑和,对自然状态的不确定,甚至在一定程度上可以摆脱完全文明的社会。

耶鲁公开课 - 政治哲学导论课程节选