你离开了船，这已经是个奇迹。你可以再做一次。这里是你开始做的一些想法。

You got out of the boat. That's amazing. You can do it again, too. Here are a few ideas to get you started.

youdao

如果你看不明白这个旋转的话，我可以在黑板上再做一次。

And, in case you have trouble reading the rotated picture, let me redo it on the board.

youdao

Another way of saying it is, I've actually said, what did I use there, and , It's basically saying there is the first point, there's the second point, add them together and I get that point.

我要去做的是-对不起，再运行一次-好，你可以看到我已经把，这两个点的坐标值加到一块儿了，然后返回了r的值,我会让大家看到我们，实际上得到的是什么，这看起来不错，好,我做了正确的操作。

麻省理工公开课 - 计算机科学及编程导论课程节选

Would you do it again?

你可以再做一次吗？

Would you 实战 - SpeakingMax英语口语达人