emissions trading
noun/ɪˈmɪʃnz treɪdɪŋ/
/ɪˈmɪʃnz treɪdɪŋ/
(also carbon trading)
[uncountable]- a system that gives countries and organizations the right to produce a particular amount of carbon dioxide and other gases that cause global warming, and allows them to sell this right
碳排放权交易；碳交易