Here I am going back to what I talked about right at the very beginning of the first lecture.

说回第一节课开始时,谈到的问题。

哈佛公开课 - 幸福课课程节选

So this is a place where the amortized cost actually helps me out. And as the gentleman at the back said, the question he asked is right, it depends on what I'm trying to do.

开始起了作用,我们要分析的话,我要想一想我在做什么，我抓住了每一点么？

麻省理工公开课 - 计算机科学及编程导论课程节选