Methane and black carbon (sooty particles) emitted by inefficient stove combustion are powerful climate change pollutants.
因炉灶燃烧不完全而释放的甲烷和黑碳(煤烟颗粒)是导致气候出现重大变化的污染物。
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Experts predict that the highly polluting, grossly inefficient internal combustion engine will be superseded by a more environmentally friendly energy converter within 50 years.