A professor in an American or Canadian university or college is a teacher of the highest rank.

双语例句例： Robert Dunn is a professor of economics at George Washington University.

罗伯特·邓恩是乔治·华盛顿大学的经济学教授。

例： Typically, the young college professor takes a job for a few years.

通常来说，年轻的学院教授需要几年的时间胜任自己的工作。