About 30 million tourists a year are more powerful than the sea, eroding Venice's resources, visiting Venice 22 million a year, an average of more than 60,000 visitors a day, even more than the local 55,000 residents, but only for Venice to bring a lot of tourism money, but still cause a lot of environmental pollution, but still cause a lot of environmental pollution, but still for the local cause a lot of environmental pollution, Urban health and other issues. The living space and quality of living of the local people are greatly affected.
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