Around 3 billion people cook and heat their homes using open fires and leaky stoves burning biomass (wood, animal dung and crop waste) and coal.

约有30亿人通过使用燃烧生物质(木柴、动物粪便、作物废弃物)和煤炭的明火以及开放式炉灶进行烹调和取暖。

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Open Ethan fire hole observation, coal layer surface in a furnace, appear local fire blaze, burning through phenomenon.

开启探火孔观察，炉内料层表面一片火光，出现局部冒火，烧穿现象。

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Open Ethan fire hole observation, coal layer surface in a furnace, appear local fire blaze, burning through phenomenon.

开启探火孔观察，炉内料层表面一片火光，出现局部冒火，烧穿现象。

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