warning of air pollution 中文意思是什麼
warning of air pollution
解釋
空氣污染警報-
Air pollution : thirty million tons of methane - a gas that contributes to global warning - comes from manure in sewage ponds or heaps
空氣污染三千萬公噸的沼氣一種助長全球溫室效應的氣體,便是來自於畜牧場的廢水或堆肥。
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