来自《耶鲁大学开放课程：1600年后西方社会的流行病 第6集 第6集》

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  or perhaps even personal preference.
  或者个人偏好
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  The reassuring point for us is that, perhaps excepting
  让我们宽慰的是
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  theology, the answer doesn't really matter.
  除了神学 这个答案并不重要
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  In any case, what we need to know is that
  不管怎样 我们需要知道的是
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  smallpox was caused by a virus,
  天花是由一种病毒引起的
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  and a virus that has no animal reservoir.
  是一种无需动物载体的病毒
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  The disease was restricted entirely to human beings,
  这个疾病是仅限于人类
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  and that will prove to be important in making it
  这一点在消灭天花过程中很重要
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  eventually a good candidate for eradication.
  最终也成为了根除这一疾病的备选之一
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  The name for the virus, Variola,
  这个病毒的名字 天花
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  derives from the Latin vriaus, meaning spotted.
  源自拉丁语Vriaus 有长痘斑的意思
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  And in England the disease, in fact, was popularly called,
  而现实中 在英国 人们对这种病的称呼