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5集 第5集》

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  and how all these feedback loops are occurring.
  所有的这些反馈回路是如何产生的
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  It's even more complicated than this,
  实际过程比这更复杂
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  but this is an interesting start at looking at the picture.
  但是看这张图是为了让各位有个初步了解
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  Let's look at some factors that affect short-term food intake.
  来看看一些影响短期食物摄入量的因素
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  Now long-term food intake, how much people are eating over all,
  长期食物摄入量 即人摄入食物的总量
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  is affected by some overlapping but also different factors,
  是由一些不同又相互交错的因素所影响的
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  but let's talk about what people eat in the short term,
  我们要讨论短期食物摄入量的问题
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  like in a given meal at a given point in time.
  就像是在限定时间内供餐一样
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  There are different ways scientists have looked at this
  科学家们的研究方法各不相同
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  and they've measured different patterns of what people eat
  他们通过这样的分门别类
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  by breaking things down into this way.
  来检测人们进食的不同模式
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  What factors determine whether a meal gets started?
  到底什么因素决定了进食的开始