I've been teaching long enough to know that doing derivations in class is equivalent to pouring ice water on the proceedings, so I do this sparingly.

我已经教了这么长时间书,所以我知道在课堂上讲推导,就好像泼冰水一样，所以我在讲这个的时候很小心。

麻省理工公开课 - 固态化学导论课程节选

As I mentioned in the earlier class, most of you would probably rather have some high fat food like French fries or ice cream, or some type of a dessert than have cauliflower or have broccoli or have brussel sprouts.

就像我前面提到的,你们大部分人都宁愿,食用高脂食品,诸如炸薯条或冰激凌,或者一些甜点,而不是花椰菜,西兰花或是抱子甘蓝

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选