Urban Environmental Sanitation and Cleaning By the end of 2001,the areas of the urban roads being swept and cleaned hit 1.84162 billion m2.是什么意思_Urban Environmental Sanitation and Cleaning By the end of 2001,the areas of the urban roads being swept and cleaned hit 1.84162 billion m2.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句