中国于二十世纪八十年代引入排污权交易，其目的是希望能以最低的社会经济成本实现既定环境目标和污染物减排目标。

Since the nineteen eighties, China introduced emission trading to realize environment protection target and reduce pollution discharge with minimum social and economical cost.

youdao

中国于二十世纪八十年代引入排污权交易，其目的是希望能以最低的社会经济成本实现既定环境目标和污染物减排目标。

Since the nineteen eighties, China introduced emission trading to realize environment protection target and reduce pollution discharge with minimum social and economical cost.

youdao