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英语翻译John Snow suspected that the second theory was correct b

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英语翻译
John Snow suspected that the second theory was correct but he needed evidence.So when another outbreak hit London in 1854,he was ready to begin his enquiry.As the disease spread quickly through poor neighbourhoods,he began to gather information.In two particular streets,the cholera outbreak was so severe that more than 500 people died in ten days.He was determined to find out why.
约翰·斯诺认为第二种理论是正确的,但是他需要证据.因此,当1854年另一次霍乱席卷伦敦时,他准备好开始了他的调查.当这种疾病在贫民区迅速传播时,他着手搜集证据.在两条特定的街区,霍乱的疫情异常严重,以至于在十天之内导致500人死亡.他下定决心要找出原因.