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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  is the size of a deck of playing cards or a bar of soap.
  是一副牌或者一块肥皂的大小
• 
  
  But when you go to restaurants or people buy steaks
  但当人们去餐馆或者买牛排的时候
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  you just don't see anything that small,
  不会看见这么小的肉
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  and so the serving sizes are multiples of what might be typical.
  所以我们生活中的份量是正常大小的几倍
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  A pancake is three inches in diameter.
  薄煎饼的直径应该是三英寸
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  One serving of pancake is three inches in diameter.
  一份的薄煎饼的直径应该是三英寸
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  Now, you know, take your hands and kind of do that
  你们可以用自己的手指比划下
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  and you can get a sense of how small that really might be.
  感觉下三英寸有多小
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  But you know, when people eat pancakes it may not be this extreme,
  但当人们吃薄煎饼时可能没那么夸张
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  but still, there are a lot of things that--
  但仍然 量非常大
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  where the portion sizes are misestimated.
  每日摄入量被完全错估了
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  Now here's another example.
  还有一个例子