易燃的 易激动的 燃烧性的英释中释
The ability of coal to release a combustible gas has long been known..煤能够释放易燃气体这一点早已为人所知。
combustible gas,可燃气体
combustible material,可燃物；易燃材料
combustible dust,可燃粉尘；易燃粉尘
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