They laugh when I tell them how I killed Jules Simon and stole his diamond to make the perfect lens.

VOA: special.2009.07.25

One group of children was a control group; the second group was taught to think back to experience that make them laugh or smile.

一群小孩组成对照组;,有人教第二组小孩回想,让他们大笑或微笑的经历。

哈佛公开课 - 幸福课课程节选

They worry that something they say or do will make others laugh at them.

VOA: special.2009.11.17