In many cities, slums are no longer just marginalized neighbourhoods; they are the dominant and distinct type of human settlement characterizing many cities in the developing world.
In many cities, the community or the informal sector is already handling and recycling 20 per cent or more of the waste generated, at little or no cost to the local authorities.
然而在许多城市里﹐尤其是在雅典﹐较穷的公民们对于富人有着双重的仇视﹐一是嫉妒﹐二是传统心理。
In many cities, however, and especially in Athens, the poorer citizens had towards the rich a double hostility, that of envy, and that of traditionalism.
Usually, high concentrations of particulate matter have been controlled in most cities as it is visible air pollution that affects all. However, it remains high in many cities.
例如,在美利坚合众国,百万太阳能屋顶计划帮助促进了太阳热系统和太阳能光伏系统在许多城市的推广。
In the United States of America, for instance, the Million Solar Roofs programme has helped to foster the diffusion of solar thermal and photovoltaic systems in numerous cities.
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