How can you be certain of this?

你怎么能这么？

My mechanical and reptilian logic are certain of it.

的机械和爬虫逻辑相当。

Yes, I am. And how can you be certain of this?

是的 你何以？

They were both English; my young friend was certain of this.

他都是英国人。这一点这位年轻的朋友十分。

I can't be certain of what time I left the office.

不能是什么时候离开办公室的。

The telling clause here is Unless he is certain of doing well.

这里的关键部分是“除非作者认自己写得好”。

Still, no one is certain of the actual identity of the model.

不，没有人能这位模特的真实身份。

I've put water into the desert because I am certain of success.

把水引向沙漠中因为信一能成功。

You were certain of that, right? And not only was it a party school.

你这一点 不是吗? 不仅是个派对大学。

But our desire for quick answers may overpower the desire to be certain of their validity.

不渴求快速的解答可能远胜於认它可靠性的慾望。

I was certain of the fact that this burning desire in her was unquenchable.

非常，这股燃烧的希望在她心中不可撼动。

And you mentioned it to nobody else except your nephew, you're certain of that?

除了贵侄子外您没有对外人提起，您吗？

Yes, Merlin. I'm certain of it. If Arthur rides out against it, he'll die.

是的，梅林。。如果亚瑟要去对抗他，必死无疑。

He doesn't know why the computer was on, but he's certain of one thing.

他不知道电脑为什么会开机，但有一件事他是的。

He was certain of only one thing: he was dancing with a beautiful woman.

他正和一位美丽的女人跳舞。

There just isn't enough continuous writing to let us be certain of what the symbols mean.

没有足够多的连续文字，便无法这些符号的意义，因此只能去推测他对神灵或自然循环的看法。

I think what we can be certain of is that both sides have deep reservations about this deal.

想能的是，双方对这项协议均有所保留。

But there's one thing that I am certain of: hell and heaven exist inside of us, right now.

地狱和天堂现在就存在于的内心。

Now, you know, I am certain of that, beforehand'.

现在，你知道，事先就了这一点。

Indeed, I may say I am certain of it.

的， 可以说信这一点。