C1 [ U ] the act of sending out gas, heat, light, etc.(气体、热量、光线等的)排放,散发,射出
Environmental groups want a substantial reduction in the emission of greenhouse gases.环保组织要求切实减少温室气体的排放量。
C1 [ C ] an amount of gas, heat, light, etc. that is sent out排放物;散发物
carbon dioxide emissions二氧化碳的排放