Unit1JOHN SNOW DEFEATS “KING CHOLERA”约翰·斯诺战胜“霍乱王”Cholera used to be one of the most feared diseases in the world, until aBritish doctor, John Snow, showed how it could be overcome. This illnesscauses severe diarrhoea, dehydration, and even death.In the early19thcentury, when an outbreak of cholera hit Europe, millions of peopledied from the disease. As a young doctor, John Snow became frustratedbecause no one knew how to prevent or treat cholera. In time, he rose tobecome a famous doctor, and even attended to Queen Victoria when shegave birth. However, he never lost his desire to destroy cholera once and for all.霍乱曾经是世界上最可怕的疾病之一，直到英国医生约翰 ·斯诺展示了如何克服它。这种疾病会导致严重的腹泻、脱水，甚至死亡。19 世纪初，霍乱在欧洲爆发，数百万人死于这种疾病。作为一名年轻的医生，约翰·斯诺非常的沮丧，因为没有人知道如何预防或治疗霍乱。随着时间的推移，他成为了一名著名的医生，甚至在维多利亚女王生孩子时照顾过她。然而，他从未失去彻底消灭霍乱的愿望。In general, doctors in those days had two contradictory theories to explainCholera spread. One theory was that bad air caused the disease.Anotherwasthatcholerawashowcaused by an infection from germs in food or water.Snow subscribed to the secondtheory. It was correct, but he still needed proof. Consequently, when an outbreakof cholera hit London in 1854, Snow beganto investigate. He discovered that in twoparticular streets the cholera outbreak was so severe that more than 500 people died inten days. He was determined to find out why.一般来说，当时的医生们有两种相互矛盾的理论来解释霍乱是如何传播的。1有一种理论认为是恶劣的空气导致了这种疾病。另一种理论是霍乱是由食物或水中的细菌感染引起的。斯诺赞同第二种理论。理论是正确的，但他仍然需要证据。因此，当 1854 年伦敦爆发霍乱时，斯诺开始进行调查。他发现在两条特定的街道霍乱爆...
