不知道...

But there are also unknown unknowns - the ones we don't know we don't know.

但是也有未知的未知，那些事情我们不知道自己不知道。

We also know there are known unknowns; that is to say we know there are some things we do not know.

我们也知道，有些已知的未知物；就是说，我们知道有些东西我们是不知道的。

But there are also unknown unknowns - the ones we don't know we don't know.

同时还有未知的未知——就是说我们不知道自己不知道。

But there are alsounknown unknowns - the ones we don't know we don'tknow .

但也存在未知的未知---那些我们不知道我们不知道的东西。

We also know there are known unknowns; that is to say we know there are some things we do not know.

我们也知道还有一些已知的未知，也就是说我们知道自己还有一些不知道的事情。

We also know there are known unknowns; that is to say we know there are some things we do not know.

我们也知道有已知的未知，就是说我们知道有些事我们不知道。

There are known unknowns. That is to say, there are things that we know we don't know.

我们也知道这世上还有已知的未知，也就是说我们知道我们还不知道的那些事情。

We also know there are known unknowns; that is to saywe know there are some things we do not know.

我们还知道存在已知的未知，即我们知道有些东西我们不知道。

The diplomat probably didn't know his plate was missing and the police didn't know he was a diplomat.

中国的外交官不知道自己的车牌已丢失，美国警察也不知道车里是外交官。

He had not before understood that this apparition of the skies, like a moth but made out of some substance unknown to him, had a person in it: a young white man, like the storemen or the foremen in the mines.

以前他不知道这个模样像飞蛾，用不知道的材料做成的天上怪物里竟然还有人：一个白人小伙子，和矿上的仓库管理员或工头一个模样。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。