The where and when are not known.

地点和时间都不知道。

He may be rich for aught I know.

他也许有钱但我一无所知。

These rookie cops don’t know anything yet.

这些新警察什么都不懂。

His hostility to your plan is well known.

他对你计划所持敌意是众所周知。

It so happens that I know the man.

我认识那个人。

It is a great privilege to know you.

认识你是一件难得事。

I count myself fortunate to have known him.

我觉得认识他很幸运。

She’s the biggest liar I’ve ever known.

她是我所见到最厉说谎大王。

The drug is variously known as crack or freebase.

这种毒品叫法五花八门，有人称为crack，也有人叫它freebase。

God refers to something that cannot be known.

神指无法理解事物。

Some tete-beche pair of the 5 pennia are also know.

,有一些5盆尼邮票对倒票。

Humanity? You don't know the meaning of the word!.

“人性？你乱扯什么人性！”。

The thing was not known to be litigious when purchased.

那东西买来时大家都不知道它在法律上是有问题。

Asteroids,also known as “minor planets”,are numerous in the outer space.

小行星,亦称为“小型行星”,在太空中不计其数。

The question is in abeyance until we know more about it.

问题暂时搁置，直到我们了解更多有关情况再行研究。

We trust him because we know he has never deceived anyone.

我们信任他,因为我们知道他从来没有欺骗过任何人。

You must not censure him until you know the whole story.

在弄清全部事实真相前不要谴责他。

Hence an endocentric construction is also known as a headed construction.

因向心结构也叫做中心结构。

She was gesturing so excitedly that I knew something was wrong.

她如激动地直打手势,我知道出问题了。

Lily Geeze, I didn't know those were also swimming events!

天哪，我原来都不知道这些也属于游泳项目呢。