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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  but in the long-term, that argument runs, its legacy was small,
  但是长期来看 影响很小
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  and clearly nowhere near the order of magnitude of plague and smallpox.
  完全无法和瘟疫天花造成的影响相提并论
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  Well, we'll be deciding among those conflicting views.
  我们将一一讨论这些观点
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  But before we can assess them properly,
  但在这之前
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  we should look in our usual way at the etiology of cholera,
  我们还是按惯例了解霍乱的致病源
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  at its epidemiology, its symptoms and its course in European
  和它的流行病学知识 症状
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  and North American history.
  以及它在欧洲和北美洲的历史
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  Then we'll be in a better position to judge its impact.
  然后我们可以更好的评判它的影响
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  There were seven pandemics of Asiatic cholera,
  历史上亚细亚霍乱有七次大流行
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  the first in 1817 to '23, which was an Asian event.
  第一次发生在1817到23年的亚洲
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  The second pandemic was in the 1830s and affected Asia,
  第二场大爆发是十九世纪三十年代的亚洲
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  but also Europe for the first time, and North America.
  同时欧洲和北美洲也第一次遭受了感染