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美丽的水上城市威尼斯,正吸引着许许多多的游客。然而在繁荣发展的旅游业背后,威尼斯当地居民却不高兴了,这是为什么呢?There are more tourists than residents in Venice.The“tourist problem”has gotten so bad in Venice that UNESCO has threatened to put the city on a list of“World Heritage Sites in danger”.