So he but he moves to question ? should law be changed? Is law changeable?

是的，但他还是质问,法律应被修改吗？法律是可改变的吗？

耶鲁公开课 - 政治哲学导论课程节选

I do think that he's trying to make good changes, but it's not going to be easy.

我认为他的确在努力要做一些改变，但这并不容易。

两党制度的优缺点 - SpeakingMax英语口语达人

But the question isn't really, is there something you could do to a human being ? so that he'd be happy, or at least enjoying himself, forever?

但问题并非，是否有办法改变人类,让他快乐或起码永远享受自己？

耶鲁公开课 - 死亡课程节选

It doesn't have every potential, it's a boy or a girl, it's not going to go back, but it has lots of potential in that eventually when it becomes an adult it could become a cellist, or a biologist, or an auto mechanic, or a biomedical engineer, all those potentials are still there.

但不是全部,比如性别已有定论,无法改变,但还是有很多潜能,当孩子长大,他可以成为大提琴家,生物学家,机械师或者生物医学工程师,他仍有所有的潜能

耶鲁公开课 - 生物医学工程探索课程节选