"One of the changes in the threat environment has been what is going on in Mexico,".

VOA: standard.2009.03.24

That's a very positive change in the food environment, so we'll talk about those sort of changes.

这是食品环境的一项积极改变,我们将会谈到这一类的改变

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But it's all different degrees of terrible, if you will, because so many people in the population share that biological vulnerability and when the environment changes, we have the problems.

只要愿意,这造成的恐慌程度是不同的,因为在人群中有很多这样的群体,他们都有这种生物易损性,当环境发生变化时,就会出现问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选