I just happened, while I was a graduate student at Oxford University, to meet somebody who is vegetarian and start talking to him about the way we treat animals which I really didn't know much about.

那时我还在牛津攻读硕士研究生,偶然遇到了一个素食者,我们聊到人类是怎样对待动物的,当时我的确不是很了解。

普林斯顿公开课 - 人性课程节选

Now when he said it, he was a medical doctor at Oxford University.

说这话时，他是牛津大学的医学博士。

哈佛公开课 - 幸福课课程节选