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9集 第9集》

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  but those took a long, long time to kick in.
  但那些花了很长很长时间才开始
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  In fact, the Green Revolution
  事实上 绿色革命
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  has happened over only a period of about 45 or 50 years.
  只开始实施了大概45到50年的时间
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  So very impressive changes
  因此 在一小段时间里发生了
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  in a short period of time,
  非常引人注目的变化
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  and of course, technology globalization has made that possible.
  当然 全球科技化使这些成为了可能
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  This is necessary,
  这些改变是很有必要的
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  because the world's population is growing at a very rapid rate
  因为世界人口以一个非常快的速度在增长
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  and the world needs more food to survive.
  而且世界人口需要更多食物去生存
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  The chart shows just how much different parts of the world
  此图只是表现了世界上有多少个不同的
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  are going to have to increase food production
  地区为了支撑人口的增长
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  just in order to support the populations.
  而需要增加食物的供给量