They wanted to understand this phenomenon that "here you have a class, that's larger than Introduction to Economics".

他们对这一奇特现象非常好奇，“竟然有比经济学导论更热门的课程。

哈佛公开课 - 幸福课课程节选

We're going to begin the class proper, Introduction to Psychology, with a discussion about the brain.

今天我们开始正式上课,心理学导论,我们首先要来探讨的是大脑

耶鲁公开课 - 心理学导论课程节选