正如韩国经济学家张夏准（Ha-JoonChang）所言：人们之所以‘过度制造’污染，是因为他们没有为处理污染的成本埋单。
As Ha-Joon Chang , a South Korean economist , says : People ' overproduce ' pollution because they are not paying for the costs of dealing with it .
张夏准