他是我的爸爸。他是个医生。

He's my Dady. He's a doctor.

youdao

他是个医生。

He was a doctor.

youdao

幸运的是，这房子的主人明显是个过时的纸书读者，而且我推断他是个医生。

Fortunately, the owner of this house is obviously a dead-tree kind of reader, and I have deduced that he is a physician.

youdao

And Jenner, because he was a trained physician, because he knew something about the scientific method, did something that these more ancient healers had not done in the past, was that he wrote down what he did.

而詹纳,因为他是个受过训练的医生,懂得一些科学方法,他做了那些古老的医生们没有做的事,就是记录了自己的所作所为

耶鲁公开课 - 生物医学工程探索课程节选

In fact, I don't know if in the news the pioneer in this is a man named Judah Folkman, who is a surgeon who first speculated that this was important, and sadly he died on Monday, but had a dramatic impact on our understanding of how cancers develop in people and new approaches.

实际上,我不清楚这个新闻中提到的人,是不是犹太?福克曼,这个领域的先驱,他是个外科医生,最先提出了这个重要的理论,不过不幸的是他在本周一去世了,他让我们对癌症有了新认识,带给我们治疗癌症的新思路

耶鲁公开课 - 生物医学工程探索课程节选