But not all government agencies are certain about the improvements.

但并不是所有的政府机构都对这些改善情况有信心。

So according to The Method of Doubt, we should not be certain about our belief.

因此，根据怀疑法，我们不应该确定我们的信念。

If we were certain about that imaginary result in the past, then we would use 'would have'.

如果我们对过去的虚构的结果很确定的话，那么我们就可以使用“would have”。

And a doubt is a feeling of not being certain about something, being unsure about what will happen.

怀疑就是对于某件事情的不确定感，不确定会发生什么。

We can only be certain about one thing.

我们只能确定一件事。

The only thing that is certain about the Segue 1 is that nothing is certain.

关于 Segue 1 唯一可以确定的是没有什么是确定的。

They should be certain about their ways of finishing the task.

他们应该确定自己完成任务的方式。

What you've got to be certain about is, is it what you want?

你需要确定的是 你到底想不想这样？

The only two people who might suspect him—his wife and Mrs Lyons could not be certain about what he had done.

可能会怀疑他的只有两个女人——他的妻子和莱昂丝太太——她们也不敢肯定他干了些什么。

But probably the only thing that's certain about this exploration into the unknown so far, is it's been dominated by men.

但到目前为止， 对于这种对未知领域的探索， 唯一可以确定的是，它一直由男性主导。

But if the expertise of the maker of the cape is clear, virtually nothing is certain about the person who may have worn it.

尽管披肩制作者的技艺之高超已确定无疑，但我们却无法了解其主人的身份。

But he was certain about his values and beliefs, knowing that he was doing the right thing out of love for humanity, including his enemies.

但他依然坚持自己的价值和信念，知道他正做着对的事，即是爱所有的众生，包括他的敌人。

" To make up your mind" also usually means that you are certain about something, meaning you probably won't change your mind in the future.

“下定决心” 通常也意味着你对某事有把握，这意味着你将来可能不会改变主意。

With so little to be certain about, scientists often have to make assumptions based on other objects found nearby, and these may be little more than valiant guesses.

有关古人类化石的研究是如此具有不确定性，科学家不得不根据附近所发现的其他物证作出假设，这种假设也许不过是大胆的猜测。

So far, to this day, no one is certain about what happened to her, and despite the nine one one call, and all of the information gathered, even she doesn't remember exactly what happened.

时至今日，也没有人能确定她到底发生了什么， 尽管九一一打电话， 所有的信息都搜集到了， 但就连她也记不清到底发生了什么。