世界上最大的城市将会出现在中国，所以研究全世界大城市区域广泛多样的探讨，并从中选取最好的经验，是非常值得的。
China will have the biggest cities of the world; it is worthwhile studying the broad variety of discussions on metropolitan development throughout the world and picks the best ideas.
世界上最大的城市将会出现在中国，所以研究全世界大城市区域广泛多样的探讨，并从中选取最好的经验，是非常值得的。
China will have the biggest cities of the world; it is worthwhile studying the broad variety of discussions on metropolitan development throughout the world and picks the best ideas.
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