The cookies were going back and forth and back and forth and the hearts up and down, well, this thing that we had that called a loop last week with a forever block with a statement inside of it is simply gonna look a little something like this.

这些饼干人来来回回的移动,还有这些爱心们上上下下地漂浮,都用到我们上周提到过的循环结构,当然还有个声明在里面，就有点像屏幕上,显示的这样。

哈佛公开课 - 计算机科学课程节选

On last week too we saw-- and in your projects you might have seen a so-called repeat loop.

在上个星期-,在你们的工程里面，可能会看到所谓的,“重复循环“

哈佛公开课 - 计算机科学课程节选

And the last thing we added were loop mechanisms. And here we saw, wow.

最后一样是循环机制,让我们来看看，噢。

麻省理工公开课 - 计算机科学及编程导论课程节选

Now there's this last type of loop.

现在这里还有最后一个循环类型。

哈佛公开课 - 计算机科学课程节选

If it isn't, then I'm going to go back around the loop, and notice what happens. If I get all the way around the loop, that is, all the way through that FOR loop and I never find a path that takes me through here, then the last thing I'm going to do is return a pair or a tuple with a special simple number none twice.

如果没有,我会回到循环看看发生了什么,如果我运行了整个循环,也就是整个for循环,我仍没有找到符合条件的路径,那么我最后做的事情就是返回一对,或者一个数组的两次none值。

麻省理工公开课 - 计算机科学及编程导论课程节选