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

because I'm going to go to medical school, I'd assume and, become a doctor, and...

因为我在医学院学习，以后会成为一名医生，

介绍好朋友 - SpeakingMax英语口语达人

You decide to go off to medical school, become a doctor.

你决定去读医学院，将来成为一个医生。

耶鲁公开课 - 死亡课程节选

But it's only an effective vaccine in the context where you have people who can go to the doctor's office, or to an urgent care, some kind of medical facility, three times, reliably, at a specified period of time.

但为了保证接种效果,人们必须亲自去诊疗室,或者在急诊室里,使用一些医学设施辅助接种,还需要接种三次,它只在一段时间内有效

耶鲁公开课 - 生物医学工程探索课程节选