好，现在，我们要开始做火车啦，知道我们要用什么做吗？

Ok, we will make a train now. Does anyone know what we will use to make it?

youdao

当梦想也现实的距离逐渐拉大时，我们要用什么来弥补那颗迷茫的心呢？

When the dream a reality also gradually widened the distance, we need to cover the heart of what puzzled them?

youdao

如果这个模型显然没有考虑到量子力学，我们为什么要用它呢?

Why are we using this model if it clearly doesn't take into account quantum mechanics?

youdao

Give you some examples. What have we talked about? We've talked about things like using comments to highlight what you're doing in the code, to make it easier to debug.

给大家举些例子,我们一直在强调什么来着？,我们讲过要用注释来说明,你在代码中进行的操作，以便于调试。

麻省理工公开课 - 计算机科学及编程导论课程节选