spontaneous combustion

详细解释:自燃
【化】 自燃
【医】 自燃

英语解释：

名词 spontaneous combustion:

ignition of a substance (as oily rags) resulting from an internal oxidation process

例句：

The spontaneous combustion of the oil-soaked rags caused the barn to catch fire.油布碎片的自燃使谷仓起火。