但是我保证你们中的大多数在10分钟内不会记得他们。

But I guarantee that most of you won't remember them in 10 minutes.

youdao

我知道，但是我保证明天不犯困。我学习很努力的。

Son: I know, but I promise I won't be sleepy tomorrow. I work really hard.

youdao

但是我保证。

But I promise.

youdao

So the exceptions are useful when you want to have the ability to say, I expect in general this kind of behavior, but I do know there are some other things that might happen and here's what I'd like to do in each one of those cases. But I do want to make sure that I don't let a value that I'm not expecting pass through.

所以当你希望有能力说,我希望一般是这样的行为,异常是很有用的,但是我明白还有一些其它的情况可能发生,我希望对每一种情况都这么做,但是我跟希望能保证,没有让一个预期之外的情况漏过去。

麻省理工公开课 - 计算机科学及编程导论课程节选