来自《耶鲁大学开放课程：有关食物的心理学、生物学和政治学 第3集 第3集》

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  they're of course much different in calories
  它们除了卡路里含量不同
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  but they're different in other ways.
  还有其他差别
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  They deliver different amounts of energy
  它们提供的能量不等
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  and they also deliver different amounts of nutrients,
  提供的营养数量也是不同的
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  but we'll talk about the energy for the moment.
  当然我们现在讨论的是能量
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  So if you were starving and you really needed energy,
  假如你快饿死了 实在需要能量
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  that is your body needed calories,
  那是你的身体需要卡路里
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  it needed usable energy in order to survive,
  身体需要可利用的能量去支撑
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  the broccoli's not going to do you much good
  花椰菜这时就没多大帮助了
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  and the brownie would be terrific.
  布朗尼蛋糕才是首选
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  But if you have enough energy,
  但如果你的身体能量充沛
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  or you have too much energy stored in your body and body fat,
  或者能量过多 体态肥胖