Follis in Latin referred to bellows which were effectively bags of air that could be repeatedly squeezed, resulting in a blowing of oxygen on the hot coals of a fire.
拉丁语里的follis指风箱，即一种可以反复挤压的气囊，用来将氧气吹到烧红的煤炭上。
The amount of flammable material that surrounds a fire is referred to as the fuel load.
火周围的易燃物数量关系到可燃物负荷。
The amount of flammable material that surrounds a fire is referred to as the fuel load.
火周围的易燃物数量关系到可燃物负荷。
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