The trouble was that smart policy would be a carbon tax that was equal for all emissions from all emitters, he said, and all evidence to date is that governments compete on who can think of the daftest climate policies, such as subsidies and tax breaks. 他表示,麻烦在于,明智的政策是对所有排放者的所有排放征收相同的碳排放税,但迄今的所有证据显示,各国政府竞相拿出最离谱的气候政策,比如补贴和税收减免。