Here has many contamination concerns in mine hometown, for example: Water pollution, light pollution, environmental pollution and so on. [translate] alocality complain 现场抱怨 [translate] agadget unveiled by the company 公司揭幕的小配件 [translate] a老王 你国庆怎么不回美国啊? How Lao Wang don'...
An important example is of road in a locality. It is used by a number of persons in the locality. But the problem is how to share the costs of repairs and maintenance of the road. In fact, very few persons will be interested in its maintenance. Thus marginal social ...