How can we prevent murderous schoolyard violence in children who have access to weapons,poor parental supervision, and a mean streak?"

如何防止校园暴力,这些暴力事件通常是由掌握武器，缺乏父母监管，或受到教唆的孩子引起的“

哈佛公开课 - 幸福课课程节选

There's no adult supervision and you kind of run everything.

没有大人的监督，你可以做任何事情。

很好奇住宿生活 - SpeakingMax英语口语达人

But they will grade under my supervision, and in keeping with the standards that I ask them to grade with.

但他们是在我的指导下评分的，也会遵守我告诉他们的评分标准。

耶鲁公开课 - 死亡课程节选