【Key words】 urban agriculture; endogenous growth model; urban crises; system theory
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Instead there are different models for different USES: roomy people-carriers for school runs, sports cars for those suffering mid-life crises, small cars for urban dwellers.
恰恰相反的是，人们为不同的用途开发不同的车型：供学校用的宽敞的载客车，供正遭受中年危机煎熬的人们选用的跑车，供城市居民选用的微型车等。
Crises can be prevented and handled effectively through urban crisis management.
为了应对各种危机，有必要进行城市危机管理。
The paper has proposed the classification of water crisis, analyzed the causes of the urban water crisis, and summarized the concrete tactics to different kinds of urban water crises.
提出了水危机的分类，分析了城市水危机的成因，并总结出应对不同类型的城市水危机的具体策略。
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