Waiting is painful. Forgetting is painful. But not knowing which to do is the worse kind of suffering.

等待是一种痛。忘却也是一种痛。但不知道该怎么办，是一种更折磨人的痛。

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Imagine, for instance, dealing with an airline agent about a canceled flight but not knowing if they were a real human or android.

比如想象与航空公司代理处理航班取消的事情，但是我们不知道这些代理是真人还是人形机器人。

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But knowing what percentage this is of the total amount leaking from the well will not be possible until a tight seal is on the well.

VOA: standard.2010.06.14

So it's a useful way of not quite knowing in advance what you want to put in a string, but being able to create strings, phrases, sentences, dynamically.

这是一个很有用的方法，如果你之前不是很了解,在句子中要加入什么，但是这个方法可以,动态地创建字符串，短语，句子。

哈佛公开课 - 计算机科学课程节选

But you're not responsible for knowing specifically that it's 11 . 5 times greater.

但你们不需要记住它,具体是１１．５倍这么大。

麻省理工公开课 - 化学原理课程节选

But not knowing everything, or even not knowing as much as one would like to know, is not the same thing as knowing nothing.

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Instead of poring over every result that matches our lazily generic keyword searches, businesses emerged to round up the content we must surely be seeking, certain only of their own algorithms but knowing not where their pioneering methods would lead.

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Though finding my voice took longer than I would have liked, the fear I felt was not of the writing, but knowing that I did not want this to be just a hobby.

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