The Texas researchers estimated the energy intensity of preparing food from agriculture, transportation,processing and food sales.

VOA: special.2010.11.23

Okay, so the body has a way of metabolizing and making use of the food such that you can get energy or nutrients from it.

对的,身体可以代谢并利用食品,从中获取能量和营养

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

There are probably those of you in the class already who are outraged by things like the modern food environment, how much energy it takes to transport things from place to place, lack of concern with sustainability and issues like this, and you'd like to see social change.

在坐的各位当中可能已经有人,对目前的食品环境感到愤怒,很多能量浪费在食品相关的运输上,忽略了对可持续性的关心等问题,你可能希望社会会有所改变

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选