It is very important that we must be honest about what we do not know.
最重要的是，对于我们不了解的事情我们必须坦诚交待。
So far we do not know how much of a problem it might be.
到目前为止，我们还不知道这个问题的严重性。
Unfortunately, we do not know how to build rockets that fast!
遗憾的是我们不知道怎样制造这么快的火箭！
If there are things we do not know, it is because we haven't learnt them.
有所不知，盖未学也。
If we do not know the facts, we are in no position to handle such matter.
不了解情况，就无从解决这类问题。
The truth is that we do not know.
事实是，我们不知道。
现在究竟什么情况，我们不清楚。
What we do not know, we cannot control.
我们不知道的，我们无法掌控。
They say, "Who this man is we do not know."
文章说“我们不知道这个男人是谁。”
Nhat Hanh: I know that we do not know enough.
一行：我知道我们懂的还不够。
But we do not know how to apply these in space.
但我们不知道如何把这些应用于太空。
We must not pretend to know when we do not know.
不懂就是不懂，不要装懂。
Above all we must be honest about what we do not know.
最重要的是，对于我们不了解的东西我们必须诚实。
We know what we have; we do not know what we will get.
我们清楚自己有些什么，不清楚的是将要得到些什么。
NASA is saying that this is "life as we do not know it".
NASA称这是“我们不知道的生命”。
Unfortunately we do not know how to build rockets that fast!
遗憾的是我们不知道怎样制造这么快的火箭。
A lot of times we eat because we are bored and we do not know what else to do.
大多时候我们吃零食是因为我们很无聊或者不知该做些什么。
Also, at modeling time, we do not know the number of reviewers required by the process.
另外，在建模时，我们并不知道该流程所需的审阅人员数量。
Rather than just talk about what we do know, we should worry about what we do not know.
我们不能只谈我们所知道的，还要考虑我们所不知道、不了解的。
Of course, just because we have something out there, we do not know if it works or not.
当然，只是有了一项服务，还不知道它能否正常运行。
The 'glass half-empty' view is that there is still much we have ignored and much we do not know.
“悲观”(glass half - empty)的观点则认为，现在还有大量未曾注意到的内容，还大量未知的内容。
We also know there are known unknowns; that is to say we know there are some things we do not know.
我们也知道还有一些已知的未知，也就是说我们知道自己还有一些不知道的事情。
Because we do not know our past, we are ill-at-ease with the present and ill-prepared for the future.
由于我们不知道我们的过去，我们对现在感到不自在，也对未来准备不足。
However, we do not know the mass of the Higgs boson itself, which makes it more difficult to identify.
但是，我们并不知道希格斯玻色子自身的质量，这使得识别它的难度大大增加。
No new board members are listed, meaning that we do not know the identities of participating investors.
该文件并未公布新的董事会成员名单，因此我们无法确定新投资者的身份。
Life is an unknown destination of travel, more time, we do not know what the future of their own will meet.
人生就是一场未知目的地的旅行，更多的时候，我们并不知道自己接下来会遇见怎样的未来。
Life is an unknown destination of travel, more time, we do not know what the future of their own will meet.
人生就是一场未知目的地的旅行，更多的时候，我们并不知道自己接下来会遇见怎样的未来。
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