“真大呀!”这是墨西哥首都墨西哥城给每一位初访者的印象。在飞机上凭窗鸟瞰,只见大街小巷密如织网,楼房毗连,茫无边际。着陆后,置身城中,但见人流如潮,车辆如梭,熙熙攘攘,好不热闹。原来在这1,500平方公里的城区面积上,聚居着1,400多万人,其人口之众, “Great!” This is the impression of every new entrant in Mexico City, the capital of Mexico. On the plane with bird’s eye view, I saw densely woven streets, buildings adjoining, boundless boundless. After landing, exposure to the city, but see the flow of people, shuttle vehicles, bustling, really lively. In the urban area of ​​1,500 square kilometers, it originally housed more than 14 million people and its mass population,