They saw certain patterns or certain ways of elaborating patterns that the teachers were talking about and, lo and behold, the fifty minutes was over and everybody had had a pretty good time.

他们听着老师以某一种,特别的方式进行讲解，瞧，短短的五十分钟很快就过去了！,而且每个人都听得很开心。

耶鲁公开课 - 文学理论导论课程节选