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First he marked on a map the exact places where all the dead people had lived.
首先，他在一張地圖上標(biāo)明了所有死者住過的地方。
This gave him a valuable clue about the cause of the disease.
這提供了一條說明霍亂起因的很有價值的線索。
Many of the deaths were near the water pump in Broad Street (especially numbers 16,37,38 and 40) .
許多死者是住在寬街的水泵附近（特別是這條街上16、37、38、40號）。
He also noticed that some houses (such as 20 and 21 Broad Street and 8 and 9 Cambridge Street) had had no deaths.
他發(fā)現(xiàn)有些住宅（如寬街上20號和21號以及劍橋上的8號和9號）卻無人死亡。
He had not foreseen this, so he made further investigations.
他以前沒預(yù)料到這種情況，所以他決定深入調(diào)查。
He discovered that these people worked in the pub at 7 Cambridge Street.
他發(fā)現(xiàn)這些人都在劍橋街7號的酒館里打工。
They had been given free beer and so had not drunk the water from the pump.
而酒館為他們免費(fèi)提供啤酒喝，因此他們沒有喝從寬街水泵抽上來的水。
It seemed that the water was to blame.
看來水是罪魁禍?zhǔn)住?/div>
Next, John Snow looked into the source of the water for these two streets.
接下來，約翰·斯諾調(diào)查了這兩條街的水源情況。
He found that it came from the river polluted by the dirty water from London.
他發(fā)現(xiàn)，水是從河里來的，而河水被倫敦排出的臟水污染了。
He immediately told the astonished people in Broad Street to remove the handle from the pump so that it could not be used.
他馬上叫寬街上驚慌失措的老百姓拆掉水泵上的把手。這樣，水泵就用不成了。
Soon afterwards the disease slowed down.
不久，疫情就開始得到了緩解。
He had shown that cholera was spread by germs and not in a cloud of gas.
他證明了，霍亂是由病菌而不是由氣團(tuán)傳播的。
In another part of London, he found supporting evidence from two other deaths that were linked to the Broad Street outbreak.
在倫敦的另一個地區(qū)，他從兩個與寬街暴發(fā)的霍亂有關(guān)聯(lián)的死亡病例中發(fā)現(xiàn)了有力的證據(jù)。
A woman, who had moved away from Broad Street, liked the water from the pump so much that she had it delivered to her house every day.
有一位婦女是從寬街搬進(jìn)來的，她特備喜歡那里的水，每天都要派人從水泵打水運(yùn)到家里來。
Both she and her daughter died of cholera after drinking the water.
她和她的女兒喝了這種水，都得了霍亂而死去。
With this extra evidence John Snow was able to announce with certainty that polluted water carried the virus.
有了這個特別的證據(jù)，約翰。斯諾就能夠肯定地宣布，這種被污染了的水?dāng)y帶著病菌。
To prevent this from happening again, John Snow suggested that the source of all the water supplies be examined.
為了防止這種情況的再度發(fā)生，約翰·斯諾建議所有水源都要經(jīng)過檢測。
The water companies were instructed not to expose people to polluted water any more.
自來水公司也接到指令，不能再讓人們接觸被污染的水了。
Finally "King Cholera" was defeated.
最終，“霍亂王”被打敗了。
