来自《耶鲁大学开放课程：生物医学工程探索 第9集 第9集》

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  And so there are famous reports of how the Aztecs,
  有报道说阿兹特克文明如何发达
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  that whole civilization, was devastated by smallpox.
  但这整个文明 都毁灭于天花
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  That disease was brought to them by the Spanish
  西班牙人在十六世纪
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  when they came to these continents in the 16th Century.
  来到这个大陆时带来了这种疾病
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  And the Spanish, a much smaller group of people
  那些西班牙人 只是一支较小的队伍
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  was able to overtake the Aztec civilization, very well established,
  他们之所以战胜高度发达的阿兹特克文明
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  because that group of people was devastated by the disease.
  是因为阿兹特克人被这种疾病摧残了
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  And they were weakened as a result,
  最终他们变得很虚弱
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  and so the Spaniards, even in fewer numbers,
  所以这群西班牙人 尽管数量很少
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  were able to conquer.
  还是取得了胜利
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  So these are just some pictures to show you
  所以这里给你们展示一些图片
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  what the smallpox lesions look like on the face of a child,
  这就是小孩脸上的天花伤痕