And what we'll discover is that when we allow the gas to expand reversibly, we get the most work. This is neat.

最后将发现,当气体可逆膨胀的时候，对外做功最大。

麻省理工公开课 - 热力学与动力学课程节选

You can ask people-- and this is a way which we talk to our children when we try to get our children to expand their moral concern of compassion.

你可以叫人们…,我们就是这样教导我们的孩子的,当我们想让我们的孩子,提高他们同情他人的道德观念时。

耶鲁公开课 - 心理学导论课程节选