一无所知

He may be rich for aught I know.

也许有钱但无所知。

I regret my ignorance on the subject.

很遗憾, 对此问题无所知。

He displayed a willful ignorance of their plight.

对于们困境故意装作无所知。

He was a little vague when I asked what had happened.

问出了什么事，无所知。

This might seem very perplexing to those who know nothing about it.

这对那些对它无所知人来说可能显得很难理解。

We are still woefully ignorant of the causes of this disease.

不幸，们仍对这种疾病致病原因无所知。

I hasten to add that I knew nothing of the fraud at the time.

忙不迭地补充说，当对那个骗局无所知。

He closed up when he found he knew practically nothing about the subject under discussion.

当发现自己对所讨论问题实际上无所知, 就不再开口了。

As I opened up the computer to try and fix the problem, I realized that I was getting into completely uncharted waters and considered whether to leave it to the experts.

当打开电脑打算修理它，意识到这个自己无所知领域，于考虑要不要请专业人员帮解决。