As a visiting professor at the Harvard Business School in 1989, he ended his work there disgusted with his students overwhelming lust for money.
主干：he ended his work...
句首的介词短语as...作状语，表示身份，visiting professor即客座教授。句末的disgusted with(对......深恶痛绝)是过去分词短语，作 状语，可表示伴随情形。overwhelming lust for money对金钱的强烈欲望。
译文：他于1989年在哈佛商学院担任客座教授，后来由于厌恶自己的学生对金钱的狂热贪欲而终止了那里的工作。