1·One in seven people on Earth lives in slums today.
今天，地球上七分之一的人口生活在贫民区。
2·They should instead plan ahead for natural growth, as well as for people migrating from the country to the city, and when slums emerge, upgrade them rather than try to eradicate them.
它们应该提前为自然增长和来自农村地区的移民作出规划，并在贫民区出现时对它们进行改造而不是试图清除它们。
3·But in places where growth has been negative, notably Africa, it is well nigh impossible to eradicate slums. Even so, life for the urban poor can be improved.
在负增长地区，如较为显著的非洲，根除贫民区遥不可及，但即使如此，城市贫穷人口的生活依然能够做出改善。
4·More wealthy countries have growing urban slums and shantytowns that drain health resources and strain the social welfare systems.
更多的富裕国家有日益扩大的城市贫民区和棚户区，对卫生资源和社会福利制度造成很大负担。
5·Many wealthy countries have growing urban slums that drain health resources and strain the social welfare system.
许多富裕国家有日益扩大的城市贫民区，耗尽了卫生资源并对社会福利制度造成压力。