know-nothing

I know nothing at all about the recent happenings there.

那里近来发生事我一点儿也不道。

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

这那些它一所人来说可能显得很难理解。

He knows nothing of unprofessional matters.

与专业关事, 他什么也不道。

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

我忙不迭地补充说，我那个骗局一所。

However, we can know nothing through this process about the "numina" (inward realities) of nature.

但是，在这一过程中，我们自然界“numina”（内在现实）依然毫所。

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

他发现自己所讨论问题实际上一所, 就不再开口了。

I know nothing but Wikipedia is a cyclopedia which is easy to use,free and grow continuously.

我只道维基是一个非常好用，免费，不断成长百科全书。