know-nothing

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

但是，在这一过程中，我们对自然界的“numina”（内在现实）依然毫所知。

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

这对那些对它一所知的人能显得很难理解。

I know nothing at all about the recent happenings there.

对那里近发生的事我一点儿也不知道。

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

我忙不迭地补充，我当时对那个骗局一所知。

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

当他发现自己对所讨论的问题实际上一所知时, 就不再开口了。

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

我只知道维基是一个非常好用的，免费的，不断成长的百科全书。

He knows nothing of unprofessional matters.

与专业关的事, 他什么也不知道。