But in return,Heller's surfing adventure helped him learn a valuable lesson about catching the perfect wave in life.

VOA: standard.2010.08.04

There is a spiritual lesson that we can learn.

我想从中我们也能学到一些关于灵性的体验。

普林斯顿公开课 - 人性课程节选

And this is a hugely important lesson to learn.

这么问自己，这是不是一个隐藏的。

麻省理工公开课 - 计算机科学及编程导论课程节选