被污染的水源可以被清洁；人类造成的荒漠可以再次生机盎然。
Polluted water can be cleaned; man-made deserts can bloom again.
为了阻止霍乱的再次发生，约翰雪建议所有的供水源头都应该被检查， 卖水公司被命令不许再把人们暴露在污染的水之下， 最终，”霍乱王”被击败了。
To prevent this from happening again, JohnSnow suggested that the source of all the water supplies be examined. The water companies were instructed not expose people to polluted water any more.
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