A third benefit has to do with faculty research and publication in their areas of specialty.
Experience in the field can help a professor ferret out (=find out)cutting- edge and controversial issues——which might be appropriate subjects for research and publication. Moreover, practical experience can boost a professor's credibility as an expert in the field. For example, each year a certain sociology professor at my college combined teaching with undercover work investigating various cults. Not only did the students benefit from the many interesting stories this professor had to tell about his experiences, the professor's publications about cults catapulted him to international prominence as an expert on the subject, and justifiably so.
进一步阐述外界工作能够为教授们寻求研究题材找到灵感，甚至有利于个人声望的扩大。
In sum, aside from certain academic areas in which outside work is either unavailable or unnecessary, students and faculty alike stand everything to gain when faculty enrich their careers by interspersing field work with academic work.
小结：作者总的来说是大部分同意原文观点的。但是我觉得他在第一段的异议方面有所欠缺。没有深入发挥下去。剩下的论证都是只能算说理清晰，谈不上上上乘，但也不错啦。主要看来还是举例救了他啊
