See this happens every semester that the chuckles, the grimaces, kind of roll through the crowd as people catch on, but there you go.

每学期学生们看到这，就会偷笑或者做鬼脸之类的，不过你们随意。

哈佛公开课 - 计算机科学课程节选

For HF, just for grins and chuckles, let's do it.

只为了好玩算一下，一起来做。

麻省理工公开课 - 固态化学导论课程节选