来自《耶鲁大学开放课程：金融理论 第13集 第13集》

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  another big baby boom and then birth rates are going to go down.
  又一个婴儿潮 出生率又会开始下降
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  So I think that you are--the number of 18 year olds in the country
  我猜你们18岁这一代应该处在高峰期
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  is at its all time high, or is going to be in two years
  或者在过两年
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  when my poor son tries to get into college.
  我儿子要上大学的时候
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  And so then it's going to go down again.
  所以出生率又会开始下降
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  So this is a cyclical thing that keeps happening over and over again
  这是有周期性的并一直会一次又一次发生
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  with baby booms and busts.
  有婴儿潮然后是低潮
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  And everybody knows about the baby boom after the war,
  每个人都知道2战后的婴儿潮
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  my generation, the '50s and '60s when I was born.
  就是50和60年代我出生的这一代
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  Everybody knows about that, but they don't realize that
  每个人都知道 但他们没有注意到
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  there's been baby boom after baby boom after baby boom,
  婴儿潮会一个又一个发生
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  and this is a cyclical phenomenon.
  这是周期性的现象