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