来自《耶鲁大学开放课程：1600年后西方社会的流行病 第12集 第12集》

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  when there was the appearance of a much more
  二十世纪后期艾滋病的出现
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  threatening competitor, hiv/aids.
  把梅毒赶下榜首位置
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  And in more recent times, after World War II and the introduction of
  近代 二战结束后人类步入了以青霉素
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  the era of antibiotics-- particularly penicillin--and sex education,
  为代表的抗生素时代 性教育也被引入
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  there's been a radical decline in the incidence of syphilis.
  这些事件使梅毒的发生率显著降低
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  And for a time there were even heady hopes that
  有一段时间甚至有人乐观地认为
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  it could be eradicated altogether.
  能够根除梅毒
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  But most recently, unfortunately,
  但不幸的是 最近
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  it's made something of a comeback.
  梅毒又卷土重来
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  Now, keep in mind, too,
  请大家注意
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  that historically the STDs weren't carefully distinguished,
  历史上对性传播疾病的区分
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  one from another.
  并不严格