We don't know what we've got until we lost.

直到失去我们才知道曾经拥有过。

Many a time we don't know what we should do, but we still don't do it when we knew what we should d..

很多时候我们都知道要做什么，但是知道了该怎么之后，我们仍然不去做.

Many a times we don't know what we should do, but we still don't do it when we knew what we should did.

很多时候我们都知道要做什么，但是知道了以后，仍然会不做.

What?We don't know what he's lying about. - Why are you talking?

什么? 我们连他撒的是什么谎都不知道 - 你为什么说话?。

Whenever we solve a problem, or make a discovery, we compare what we know with what we don't know.

每当我们要解决问题，或做新的探索时，我们就把已知和未知进行比较。

We fear what we don't know, because we know there might be something out of our control.

我们对未知感到恐惧，因为我们知道有些事可能超出我们的控制。

When a language dies, we don't know what we lose with that language.

当语言消失，我们不知道我们还失去了什么。

What we don't know is why a longer education is so good for you.

这也是我们并未知道的，长期教育对我们的好处。

What we don't know is exactly what functionality will be delivered in each iteration.

我们所不知道的是，什么功能将准确地在每一个迭代过程中被交付。

We don't know what we are doing right now or how our present actions will affect the future.

我们不知道我们目前在做什么，也不知道我们目前的行动对将来有什么影响。