现今这种主要温室气体的浓度已经达到百万分之三百九十——高于工业化时代前的百万分之二百八十——并且科学家认为现阶段这个数字还将继续上涨。
Current concentrations of this dominant greenhouse gas have reached 390 parts per million — up from 280 PPM in recent pre-industrial times — and scientists tracking this buildup see no end in sight.
现今这种主要温室气体的浓度已经达到百万分之三百九十——高于工业化时代前的百万分之二百八十——并且科学家认为现阶段这个数字还将继续上涨。
Current concentrations of this dominant greenhouse gas have reached 390 parts per million — up from 280 PPM in recent pre-industrial times — and scientists tracking this buildup see no end in sight.
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