I am meowing three times and you can very quick--easily see perhaps that this very quickly could get messy.

我学猫叫三次,事情会立刻变得混乱。

哈佛公开课 - 计算机科学课程节选

And now, if I'm touching mouse pointer, we saw that Boolean expression before, play sound meow, wait a couple of seconds, and then just keep checking.

现在，如果我们碰下鼠标指针，起初我们看到一个布尔表达式，播放猫叫的声音，等几秒钟，然后如刚才那样做检测。

哈佛公开课 - 计算机科学课程节选

There we go. Now if I do this, an infinite number of times, we should get roughly 50/50, but now we have the ability to do things only once in awhile.

开始，如果我们，不停地按这个按钮，我们大致会有一半的机会听到猫叫，但是我们每次只有一次按按钮的机会。

哈佛公开课 - 计算机科学课程节选

- Well, this one was me having a little fun here. So play-- Cat meows ad nauseam.

这个有意思，如果打开-,猫叫的很难听。

哈佛公开课 - 计算机科学课程节选