求翻译：城市的发展经历了一个城市的最显著特征是人口密集，因此，社会问题集中地发生在城市里。城市社会问题是经济发展到一定阶段的产物。不同的经济发展阶段产生不同的社会问题；不同的社会制度，社会问题的表现形式也不相同，所以城市社会问题复杂多样，问题的严重程度强弱不等。这里只列举现代西方城市普遍存在并日益严重的社会问题。是什么意思？

The development of the city has gone through a city's most notable feature is densely populated, therefore, the social problems concentrated in the city. The city social problems is a product of economic development to a certain stage. Different social problems in different stages of economic develo

The development of the city has experienced one of the cities the most remarkable features is the densely populated and, therefore, focus on social issues and in the cities. Urban social problems is economic development to a certain stage of the product. Different stages of economic development prod

The city development has experienced a city most dominant character is the densely population, therefore, the social question strongly occurs in the city.The city society question is the economy develops certain stage product.The different economy development phase has the different social question;

Urban development has gone through one of the city's most notable feature is densely populated and, therefore, social problems concentration occurs in the city. Urban social problems was a product of the economy develops to a certain stage. Different stages of economic development of different socia

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