来自《耶鲁大学开放课程：1600年后西方社会的流行病 第10集 第10集》

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  And this too was important in the social history of cholera,
  这一点在霍乱的社会历史中是很重要的
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  and could last up to three days.
  也许会持续三天
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  The site of infection is the small intestine.
  感染部位在小肠
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  There the flagellum, at the tail of the bacterium,
  病菌的胃部有鞭毛
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  that we've seen, propels the Vibrio,
  我们可以看到 比如霍乱弧菌
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  and it attaches itself to the intestinal wall.
  它可以将自己附着于肠壁上
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  Ironically, there the immune system of the body
  讽刺的是 身体的免疫系统
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  is usually capable of killing the bacterium.
  通常有杀灭病菌的功能
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  But when it--as the bacterium dies,
  然而当病菌死亡后
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  it releases a very powerful toxin, an enterotoxin,
  它会释放出一种强力毒素 即肠毒素
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  that's one of the most powerful poisons in nature.
  这是自然界中最强效的毒素之一
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  And its effect on the intestinal wall
  它会在肠壁上