gas
found its around until it
霍法是看victims.一种乱病毒在空气中繁殖着，像一股危险的气体到处漂浮，直到找到病毒的受害者为止。The second suggested that
people absorbed this
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their into disease .bodies with their meals第二种看法是人们在吃饭的时候把这种病From 毒引入体内的。the stomach the disease the quickly ed
attackthe soon body and
affected person died.病从胃里发作而迅速殃及全身，患者就会很快
----
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地死去。suspected Snow John theory that the
second
he was correct but 诺evidence.斯needed
推测第二种说法是正确的，但他需要证据。another when So in London outbreak hit
he was ready 1854, to
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