One billion people, one-seventh of the world's population, or one-third of urban population, now live in shanty towns, which are seen as "breeding grounds" for social problems such as unemployment, poverty, crime, drug addiction, alcoholism, and other social ills.
10亿人，或世界人口的七分之一，或城市人口的三分之一现在住在棚户区，这是社会问题的温床，如犯罪、毒瘾、酗酒、贫困和失业等。