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19集 第19集》

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  change in physical environment,
  以此来改变物理环境
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  so you walk into a fast food store and there's menu--
  你去一家快餐店 那里的菜单
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  there's a sign that tells you how much calories are in the item
  会有标志告诉你
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  that you're considering ordering.
  想点的食物里含有多少卡路里
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  Or you can change the social or the legal environment and--
  你可以改变社会或者法律环境
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  as a law you could eliminate the subsidy for corn,
  可以通过法律来取消对玉米的津贴
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  which would result in perhaps less use of high fructose corn syrup,
  这或许会减少高果糖玉米糖浆的使用
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  and perhaps less calorie dense foods.
  或许会减少高卡路里食物
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  As a result, you could regulate the sale of foods,
  因此你可以控制食物的销售
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  something that we don't think about a whole lot,
  这是有时我们考虑不到的地方
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  but should children be allowed to buy any food they want?
  应该允许孩子去买他们想吃的任何食物吗
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  Should a young child be allowed to go into a convenience store
  一个小孩可以到便利商店