美国。洛杉矶。一个街角收垃圾的人把路边的废纸箱捡起来,压平,卖给废纸收购点,一天能赚80美元。废纸收购点将废纸箱集中运到废纸回收中心,每吨会得到约30～40美元的报酬。在回收中心,空气压缩机将这些纸箱压缩、打包,装进集装箱,送上货轮。两周后,卸载在上海港的废 United States. Los Angeles. A corner of the garbage collection people pick up the roadside waste paper box, flatten, sold to the acquisition point of waste paper, earn 80 dollars a day. Waste paper collection point to the waste paper box transported to the waste collection center, will receive about 30 to 40 dollars per ton reward. In the recycling center, the air compressor compresses these cartons, packages them, loads them into containers, and delivers them to cargo ships. Two weeks later, the waste unloaded in Shanghai Port