OK, says it says enter a float. I give it something that can be converted into a float, it says fine. I'm going to go back and run it again though. If I run it again, it says enter a float.

好了，看到他说输入一个浮点数,我输入它可以转换为浮点数的值,那没问题，我回过来再运行一遍,如果我再运行一遍。

麻省理工公开课 - 计算机科学及编程导论课程节选

And it is really great because he actually goes through the thought process for you and describes - I need to give you one piece of background.

它非常厉害,因为他已经将思考的过程,为你们过了一遍，并描写,我需要给你们一点背景介绍。

麻省理工公开课 - 固态化学导论课程节选