Some people are pessimists: they always think about how bad things are or will be.

VOA: special.2009.08.30

We sense food coming in, that sets into gear a series of metabolic and biological processes that are very interesting, and then of course once the food gets in the body it does lots of interesting things-- some good things and some bad things.

美食当前,食指大动,身体从而启动一系列新陈代谢过程,和有趣的生物过程,而且,当食物进入身体,它就产生许多有趣的效应,这些效应有好有坏

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Could you tell us about some of the good and bad things about living with a roommate?

你能说说跟室友同住的好处和坏处吗？

与室友和睦相处 - SpeakingMax英语口语达人

These kinds of fats are not necessarily bad, and so things like olive oil in the diet tends to be protective and may explain some regional variations in rates of heart disease.

这些脂肪就不一定有害,所以饮食中橄榄油之类的对身体是有益的,这也解释了地域间心脏病发病率的差异

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选