Thank you - I mean you know Netty Roseford?

谢谢你 - 你认识内蒂 罗斯佛吗?

But hang on -- how do we know that radioactive atoms don't senesce?

但是，听清楚了—们怎么知道放射性原子不衰？

"I purposely came today, as I knew you'd be in."

"意在今天来,知道你在家。"

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

她如此激动地直打手势,知道出问题了。

He bamboozled his professors into thinking that he knew the subject well.

欺骗了的教授，使教授认很了解这门学科。

I have never been to that city; thereby I don't know much about it.

从未去过那座城市, 此对它不怎么熟悉。

"I always feel he has a grudge against me, although I don't know why."

"总觉得讨厌,但是不知道这是了什么。"

He behaved badly with impunity as he knew the teacher was weak.

"表现不好,却没有受到惩罚,知道师软弱可欺。"

The where and when are not known.

地点和时间都不知道。

His proficiency as a surgeon is well known.

一名外科医生的水平是有名的。

Carroty, do you know whatSpring Festival is?

小萝卜，你知道春节是什么吗？

We were whisked off in a taxi before we knew where we were.

还没等们弄清楚怎么回事，出租车就一阵风似的把们带走了。

There was only one absentee because everybody knew the meeting was very important.

只有一个人缺席，大家都知道这个会议非常重要。

He may be rich for aught I know.

也许有钱但一无所知。

She smiled shyly,because she knew she would have the last laugh on them.

她羞涩地微笑着,她深知她最后会胜过们。

Your mother would throw a wobbly if she knew what we’d been doing.

你母亲要是知道们干了些什么肯定会大发脾气。

Before knowing Yamaha Electone, we didn't know what was electronic organ.

在认识山叶电子琴之前，们不知道什麽是电子风琴。

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

忙不迭地补充说，当时对那个骗局一无所知。

It so happens that I know the man.

碰巧认识那个人。

These rookie cops don’t know anything yet.

这些新警察什么都还不懂。