It depends on how full the class is and how many additional students the professor is willing to let in.
这取决于课堂有多满，以及教授愿意让多少额外的学生加入。
2
Baird urged him not to waste his intellect on petty state politics but to join the University of Chicago law faculty as a fullprofessor.
Baird劝他不要把自己的才能浪费在琐碎的州政中，他应该加入芝加哥大学法律系成为一名全职教授。
3
He ended up at City University of New York, became a fullprofessor at age thirty three, died in his early '50s, did not lead a good life but had extraordinary discoveries.