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

"我特意在今天来,因为我知道你在家。"

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

她如此激动地直打手势,我知道出问题了。

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

他欺骗了他的教授，使教授认为他很了解这门学科。

But don't thought of that his lower classman still knew.

但是没有想他学弟还是知道了。

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

"他表现不好,却没有受,因为他知道老软弱可欺。"

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

只有缺席，因为大家都知道这会议非常重要。

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

你母亲要是知道我们干了些什么肯定会大发脾气。

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

我忙不迭地补充说，我当时对那骗局无所知。

She’d have my guts for garters if she knew I’d lent you her car.

要是她知道我把她的车借给你了，她准会抽了我的筋。

All this proves conclusively that she couldn’t have known the truth.

这切无可置疑地证明她不可能知道真相。

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

在认识山叶电子琴之前，我们不知道什麽是电子风琴。

We knew her competence in solving problems.

我们都知道她解决问题的能力。

We kept to the roads we knew.

我们不离开我们认识的路。

None of the pupils knew the answer.

学生中谁都不知道答案。

The where and when are not known.

地点和时间都不知道。

Thereupon, we knew, our endeavor was valuable.

于是，我们知道，我们的努力是有价值的！

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

"我总觉得他讨厌我,但是我不知道这是为了什么。"

Stereographic projection is known since the antiquity and was originally known as the planisphere projection.

立体绘图法原称为星座盘投影法。

There is no knowing when he will come.

无法知道他什么时候来。

Nobody knew how the secret had leaked out.

没有知道秘密是怎样泄露出去的。