How can you be certain of this?

你怎么能么确定？

The work he is certain of North Korean soldiers protecting the tunnel. This North Korean defector was a senior intelligence official within the military.

他认为此举朝鲜军队对隧道采取的保护措施所致。位朝鲜的背叛者曾名高级军事情报官员。

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

不过我们渴求快速的解答 可能远胜於确认它们可靠性的慾望。

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

我不能肯定我什么时候离开办公室的。

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

我非常确定，股燃烧的希望她心中不可撼动。

We would recognise that another was offering us their deep affection but, in the secret folds of our souls, we could only be certain of a mistake or delusion.

我们会意识到人正向我们表达深厚的感情，但灵魂的秘密角落里，我们只能确信种错误或幻觉。

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

的 你何以确定？

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

里的关键部分“除非作者确认自己写得很好”。

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

我把水引向沙漠中因为我确信定能成功。

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

他们都英国人。点我位年轻的朋友十分肯定。

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

你们很确定点 不吗? 不仅派对大学。

He said that as we get older our health is not guaranteed-so we cannot be certain of how long we will stay healthy for.

他说随着我们年龄的增长，就无法保证身体健康了--所以我们不确定我们还能健康多久。

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

的，梅林。我肯定。如果亚瑟要去对抗他，必死无疑。

My mechanical and reptilian logic are certain of it.

我的机械和爬虫逻辑相当确定。

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

不过，没有人能确定位模特的真实身份。

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，但有件事他肯定的。

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过，您确定吗？

She had got rid of two of the secrets which had weighed on her for a fortnight, and was certain of a willing listener in Jane, whenever she might wish to talk again of either.

两星期来，两件秘密心思直压她的心头，如今总算放下了块大石头，她相信以后要再谈起两件事来，不论其中哪件，吉英都会愿意听。

But we can be certain of this: far from being the magical, novel creations of brilliant machines, the outputs of this kind of AI is entirely dependent on the uncredited and unremunerated work of generations of human artists.

但我们可以确定的：与其说种 AI 的输出聪明机器的神奇而新颖的创作，不如说它完全依赖于几代艺术家无名无酬的工作。

And, while you can't be certain of an opiate or opioid overdose, some signs should make you suspect that there's a problem, like bottles of drugs nearby the patient, or a very slow respiratory rate, or even pinpoint pupils.

而且，虽然你不能确定麻醉剂或阿片类药物过量，但些迹象应该会让你怀疑有问题，比如病人附近有几瓶药，或者呼吸频率非常慢，甚至出现针状瞳。