But Weissman says the survey by Green Seal and the firm EnviroMedia Social Marketing shows that consumers are uncertain how to tell whether a product helps the environment.

VOA: standard.2009.03.30

It's marketing, it's economics, it's the environment is set up in such a way to make these foods very appealing and very attractive to people, and that's why they eat them.

是市场营销的诱导,是经济效益的驱使,是社会环境的影响使得,这些垃圾食品对人们来说极具吸引力,这也是人们喜欢吃垃圾食品的原因

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选