I don't know. Correction—I do know, but I'm not going to tell you.
我不知道。不，我知道不假，但不打算告诉你。
We do not even know, for example, how many stars have planets, and we certainly do not know how likely it is that life will arise naturally, given the right conditions.
例如，我们甚至不知道有多少恒星有行星，我们当然也不知道如果有适当的条件，生命自然出现的可能性有多大。
The question of what we know and do not know constantly bothered me.
我们知道什么和不知道什么这个问题一直困扰着我。
Zhuang Zi smiled, "but you are not me. How do you know that I don't know the fish's feelings?"
庄子笑了笑：“你不是我。怎么知道我不知道鱼的感受？”
It is true that we do not know what we have until we lose it, but it is also true that we do not know what we have been missing until it arrives.
诚然，我们并不知道我们失去了什么，直到我们真的失去了它们；但是我们也确实不知道我们已经漏掉了什么，直到漏失的东西又回到了我们身边。
Often, users do not know what they want; or if they do, they don't know how to describe it.
用户常常不知道他们要的是什么，或者知道是什么却不知道怎么描述它。
We must be open about what we know and what we do no know - and in a fast moving world what you do not know is often as important as what you do know.
我们必须对自己知道什么和不知道什么采取一种坦率的态度，在一个快速运转的世界里，你不知道的常常和你知道的同样重要。
I know the city in a way you do not, and you know the city in a way I don't.
我用你不知道的方式了解这座城市。你用我不知道的方式了解这座城市。
How then does he see? "his parents said," we know that this is our son, and that he was born blind; but we do not know how it is that he now sees, nor do we know who opened his eyes.
如今怎么能看见了呢，他父母回答说，他是我们的儿子，生来就瞎眼，这是我们知道的，至于他如今怎么能看见，我们却不知道，是谁开了他的眼睛，我们也不知道。
I do not know how to react. I don't know whether to feel afraid or grateful for the protection.
我不知道做怎样的反应，是应该害怕，还是对警察的保护感激。
I'm not sure, but we have this need to know. I believe I do not have to know everything about everybody.
我不太确定，但是我们必须明白，我们没必要知道每个人的每一件事。
If you do not know the answer, it is all right to tell the teacher that you do not know.
如果你不知道答案，完全可以告诉老师你不知道。
55though you do not know him, I know him.
你们未曾认识他，我却认识他。
The involved web services do not know (and do not need to know) that they are involved into a composition and that they are a part of a higher business process.
所涉及的Web服务并不知道(也不需要知道)它们所涉及到的组合，它们只是一个更高的业务流程的一部分。
I know nothing about that, and I do not know him!
我不知他干过什么！我不知道这个人！
They do not know you - and you only know of them what you have seen and heard.
他们不了解你，你了解的他们也只是你自己看到的及从别人那里听到的。
Had I filled myself with all that you know what room should I have for all that you do not know?
我若把你所知道的一切来装满自己，那么还有什么空间来装你所不知道的一切呢？
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。
It is not simply what we know that matters, but how we react to what we do not know.
不仅仅是它我们知道一些事情，更重要的是我们如何应对未知的状况。
Do not tell everything that you know, But always know everything that you tell!
不要说出所有你知道的事情，但一定要知道你所说的所有事情！
Although we do not know the long-term consequences of separation or deprivation, we do know that they can produce acute immediate distress.
虽然我们不知道分离和丧失亲人的长期后果，但我们知道它们能立即引起剧烈的悲痛。
Do you know, you would have frightened any one who did not know you?
您不知道，要是人家不认识您，您才把人吓坏了呢。
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。
We do not know when man first began to use salt, but we do know that it has been used in many different ways throughout history.
我们不知道人们何时开始使用盐，但是我们知道在整个历史中盐已经被用于很多不同的方式中。
We do not know when man first began to use salt, but we do know that it has been used in many different ways throughout history.
我们不知道人们何时开始使用盐，但是我们知道在整个历史中盐已经被用于很多不同的方式中。
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