And the only way you will know for sure is to jump in with both feet.

Do you know for sure exactly what happened?

你真的知道发生了什么事 吗 ?

Do you know for sure?

你确定 吗 ?

At least we know for sure that teams are interested McGrady.

最起码,我们知道确实有球队对麦迪有兴趣.

There's two things I know for sure.

世上有两件事我可以确定.

I don't know how you can say that.

真想不到你竟说那话。

I didn't know how to tell you.

我不知道该如何告诉你.

We don't know how the transcript leaked.

我们不知道文字本是怎么泄露出去的。

You know how prickly she is.

你知道她有多么爱发脾气。

And a few weeks later when a tiny chick hatched, their happiness know no bounds.

几个星期后,一只小鸟破壳而出, 它们欣喜万分.

I know of a shop where you can get the things cheaper.

我听说有一家商店,在那儿的东西较便宜.

You should let him know of this matter.

这件事你得跟他通个气.

The best method I know of.

我所知道的最好的方法.

Do you know of a really good hotel in this city?

你知道这个城里有家真正像样儿的好旅馆 吗 ?

Do you know of any plays that will be opening in the next few weeks?

你听说最近几个星期内要演什么戏 吗 ?

I don't know the writer, but I know of him.

我不认识这个作家, 但我听说过.

I'm surprised that you didn't know of such an important event.

这么大的事你竟会不知道？

The work isn't really that difficult once you to know the ropes.

一旦你掌握了窍门,这耕作真的不是那么难做.

I will teach Fred to do It'since I know the ropes.

我会教富莱德怎么去做它,因为我懂得诀窍.

The job is easy after you know the ropes.

等你懂得诀窍了,这工作就很容易.

I know the ropes much better than you do.

对这事如何去办理,我比知道多得多.