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To really know what makes a great city work,you have to ppel back its skin and expose its secret life force.A system of incredible complexity in technology of millions depend on ,but few understand.A fantastic voyage now begins a journey deep inside the world's megacities.
It's the world's biggest city.It covers more than 1400 square kilometers.Its population density is greater than New York City,Tokyo or London.But for the nearly 18 million people who live here it's not just another metropolis.Mexico City is grounds zero.On one side,one of the world's most earthquake-prone hot spots.On another,one of the world's most active volcanos and beneath their feet,the shaky foundation of an ancient lake bed.The mother nature,Mexico City is one big target, at any moment,the big one could heat.
瞬間報警聲音響起,他們只有60秒的時間轉移到安全的地方。但墨西哥城的孩子們卻好像在玩耍一樣。但是對于成年人來說,那是很嚴肅的問題。在1985年他們經歷過真實的事情。
