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都市是什么？ 你可以说出一大串答案：都市是很多人聚居的地方，是商业和文化中心、是交通枢纽、是资讯发达的地方……上面的每一种说法，都会加深我们对大都会的认识。 但是没有一个人会想到回答——都市也是一个自然生态系统。都市是“不自然”的吗？ 我们习惯于那?
What is the city? You can tell a long list of answers: The city is a place where many people live in. It is a business and cultural center, a transportation hub, and a place where information is developed. Each of the above statements will deepen our understanding of the metropolis. But no one would think of the answer - the city is also a natural ecosystem. Is the city “unnatural”? Are we used to that?