I can still experience envy toward my best friend and choose to behave generously and benevolently toward him.

我仍会嫉妒最好的朋友,但选择对他宽容和亲切。

哈佛公开课 - 幸福课课程节选

So after about a month, I started to, once in a while, experience some envy toward David.

一个月后，我开始偶尔，对David产生一种嫉妒。

哈佛公开课 - 幸福课课程节选