这些城市中的难民只能栖身于拥挤的贫民窟或棚户区，很少甚至根本无法享有医疗保健和社会服务。
Forced to live in overcrowded slums or shantytowns, city-dwelling refugees have little or no access to health care or social services.
近一半的世界人口拥挤在城市，经常没有足够的卫生设施，暴露于诸如麻疹和流感这类疾病的流行。
Nearly half the world's people are crowded into urban areas, often without adequate sanitation, and are exposed to epidemics of such diseases as measles and flu.
除了大城市的喧闹拥挤，约翰内斯堡还贴别崇尚绿色，人们倾心于户外活动。
Despite the hustle and bustle of the big city, Jo 'burg is unexpectedly green and orientated towards outdoor living.
除了大城市的喧闹拥挤，约翰内斯堡还贴别崇尚绿色，人们倾心于户外活动。
Despite the hustle and bustle of the big city, Jo 'burg is unexpectedly green and orientated towards outdoor living.
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