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More than half of us now live in cities. Crowded,世界上最繁忙的城市 chaotic and bursting with life - these are places under pressure. In this brand new series, Dan Snow, Anita Rani and Ade Adepitan go behind the scenes to reveal the hidden systems and armies of people running some of the greatest cities on earth. Find out how Mexico City keeps its inhabitants safe from earthquakes, and meet local people who offer an inside look at life in metropolises like Delhi and Hong Kong. Meanwhile, Moscow's incredible architecture shows that the world's busiest cities also have some of the richest histories.七人见第八人不动，也都停了下来，问：你怎么不追呀？呵，呵，呵，呵，呵……第八人说：愚蠢，愚蠢的人。总是因为眼前的事，忘了今天的目的。我来这里，不是为了去追他。如果您喜欢星空影院（www.5178.xyz）请分享的《世界上最繁忙的城市》，别忘了推荐给你的好友！