Mr.Stevens says a one hundred percent increase in fish farming over ten years is necessary to keep providing for people at the current level.

VOA: special.2011.02.08

And so if one is looking to keep protein at a certain level, then these sort of foods would get favored.

但还不是全部 而如果要使体内蛋白维持在某种水平上,那这些食物会比较受青睐

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Yeah, and if you could get to choose your own shock level, you could keep--then very, very few people go all the way.

如果可以自己选择电击强度，很少人会选择高强度的。

耶鲁公开课 - 心理学导论课程节选