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关注：1
2013-05-23 12:21
求翻译：When the population of cities hit several hundred thousand to a million, diseases could spread rapidly and create genuine epidemics. The fact that the Black Plague killed perhaps half the European population was an indication, ironically, of progress, because populations had reached critical mass for epidemics and ship是什么意思？ 待解决
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When the population of cities hit several hundred thousand to a million, diseases could spread rapidly and create genuine epidemics. The fact that the Black Plague killed perhaps half the European population was an indication, ironically, of progress, because populations had reached critical mass for epidemics and ship
问题补充： |
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2013-05-23 12:21:38
当城市的人口达到几十万到几百万时，疾病可能迅速蔓延并创建真正流行。黑色瘟疫死亡也许一半的欧洲人口的事实是进展的表明，讽刺的是进展的，取得，因为人口已经达到临界质量的流行病和航线连接世界各地的古代城市。
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2013-05-23 12:23:18
在城市的人口打几十万到一美元,疾病可迅速蔓延和创造真正流行病。 这一事实也许黑死病死亡的一半人口,显示了欧洲,具有讽刺意味的是,进展的,因为人口已达到了关键大规模的流行病和航运路线连接古代城市的世界。
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2013-05-23 12:24:58
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2013-05-23 12:26:38
当城市的人口达到几十万到几百万时，疾病可能迅速蔓延并创建真正流行
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2013-05-23 12:28:18
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