You should never let anyone like that in unless you are expecting them.

不了解的人就不能让他们这么进入。

But there's just a lot we don't know.

但现在还有很多们不了解的情况。

They know enough to know that there's a lot they don't know.

他们清楚地知道自己还有很多不了解的事情。

A " newton" of things we don't know about the universe.

们对宇宙不了解的东西有“很多 ”。

So in the headline, the mystery illness is the thing that people don't understand.

所以在标中，神秘是人们不了解的事情。

There's a lot that researchers don't know about it.

对于这，科学家还有很多不了解的地方。

There's still much that we do not understand about how the immune system functions.

关于免疫系统的功能，们还有很多不了解的地方。

Finally, being able to explain words and ideas which you don't know is also important.

最后，有能力解释你不了解的词汇和想法也是很重要的。

She saw something awful in the very simplicity she failed to understand.

她正是在这她所不了解的单纯之中看到了什么可怕的东西。

I think almost all of them are on deep branches of life that we don't know anything about.

认为几乎所有的人都处于们不了解的生命的深层分支。

So the myth tried to give people an explanation for something they could not understand.

如此这般，神话的作用便是为人们不了解的事物寻求一令解释。

Of course you don't know the virus down there.

当然们不了解那里的毒。

The Essex Serpent is the unknown and we fear what we don't understand. - Yeah.

艾塞克斯之蛇是未知的，们害怕们不了解的东西。- 对。

She does not understand the nature of an oath.

她不了解誓言的本质。

You do not know the power of the dark side.

你们不了解黑暗的能量。

John doesn't seem to be awake to the dangers of smoking.

约翰似乎不了解抽烟的危险。

In honor of the occasion, here's seven things you might not have known about the groundhog.

为了纪念这一时刻，们列出了你可能不了解的有关土拨鼠的7件事。

What's something most people don't know about you?

别人最不了解你的地方是什么？

He was concerned about those who do not.

他对不了解情况的人表示担心。

It's correct. I mean, we don't know anything about their claim.

没错。们并不了解他们的申请。