unknown

If he ignores this, he himself will be ignored.

若有不知道的、由他不知道罢。

I know something you don't know!

我知道一些你不知道的事情!

Never am I ashamed to confess my ignorance of what I do not know.

(因此)我是不知道的事就承认说不知道，并不害羞。

Nor am I ashamed to confess my ignorance of what I do not know.

因此我是不知道的事就承认说不知道，并不害羞。

Not aware or cognizant.

未意识到的，不知道的

A crisis unbeknown to us.

我们所不知道的危机

A: No, I didn't know that.

甲：啊，我本来不知道的。

Well, I do not know really .

噢，我真的不知道。

Really? I do not know .

真的？ 我还不知道。

Really? I didn't know.

真的？我可不知道。

You don' t know his address, neither do I.

你不知道他的地址，我也不知道。

I'm sorry, I really don't know.

对不起，我真的不知道。

I wonder if I have enough credit.

不知道我的学分够不够

THE TAO CANNOT BE TOLD SUCCESSFULLY, BUT CAN BE PERCEIVED BY INTUITION--THE TAO OF PERCEPTION OF IMPERCEPTION;

不可“道”之“道”借言而“悟”之——《庄子》的“不知之知”的“道”

I don't know. I know as much as you, OK?

不知道,我和你知道的一样多,好吗?

I know the tune of the song, but I don't know the words.

我知道这首歌的曲调，但我不知道歌词。

Do you know how the phrase come about?

你知道不知道这个成语是怎样产生的？

Feeling-of-Knowing (FOK) and Feeling-of-not-Knowing (FOnK): An Experimental Disassociation;

知道感(FOK)和不知道感(FOnK)的实验分离