在他去世时，他是乔治华盛顿大学医学院的教授。

At the time of his death, he was a professor at George Washington University's medical school.

youdao

在他去世时，他是乔治华盛顿大学医学院的教授。

At the time of his death, he was a professor at George Washington University's medical school.

youdao