因此，好比歌坛上的猫王和甲克虫乐队，环境上的两大方法：是“限额-交易”还是对所有人都收碳税？

Hence, the environmental equivalent of Elvis vs. the Beatles: cap-and-trade carbon emissions, or impose a carbon tax on all users?

youdao

麦凯恩放弃收碳排放税？

McCain backs down on tariffs?

youdao

麦凯恩放弃收碳排放税？

McCain backs down on tariffs?

youdao