But professors at big schools say there is not enough time to write evaluations for each student in large classes.

VOA: special.2009.03.05

Students and most of their professors are on the barricades, that is to say in protest not only against the war in Vietnam but the outpouring of various forms of authoritative resistance to protest that characterized the sixties.

学生和大多数教授在抗议，不仅仅是反抗越南战争,更是一种对典型的六十年代各种形式的,作者权威的反抗。

耶鲁公开课 - 文学理论导论课程节选

And also we are able to tap into the expertise of professors, not just at the University of Pennsylvania, but also at other schools as well so that we can bring in the very top leading researchers and practitioners of positive psychology.

我们还聘请多位教授，不局限于宾州大学，还有其他大学,我们请来最杰出的研究员,和积极心理学的从业者。

哈佛公开课 - 幸福课课程节选

In fact,not even all professors are full professors.

VOA: special.2010.09.02

Her professors advised her not to study science.

VOA: special.2010.03.14

Assistant professors do not have tenure.

VOA: special.2009.04.09

Not all college teachers are full professors.

VOA: special.2009.04.09