noun🔗Share瓦斯，沼气 An inflammable gas (mostly methane) found in coal mines; forms an explosive mixture with air."The old coal mine was sealed off due to the constant danger of firedamp explosions. "由于老煤矿瓦斯爆炸的危险性一直存在，所以被封锁了。substancematerialgeologyenergychemistryenvironmentdisasterfuelindustryChat with AIVocabulary GamePractice Reading
