the act of actually pushing someone over onto the tracks and killing him, you are actually killing him yourself.

真的动手把人推到轨道上让他死的这种行为，就等于是你亲手杀了他。

耶鲁公开课 - 公正课程节选

because it's an offence that, once they reach university or college,

因为抄袭是一种错误行为，等他们到了大学，

对于抄袭的想法 - SpeakingMax英语口语达人

The discussion was over using things like poker chips for reinforcement and the point is exactly right.

这是关于应用筹码等物来强化行为的问题,她说的十分正确。

耶鲁公开课 - 心理学导论课程节选