noun🔗Share可燃性ガス（主にメタン）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. "古い炭鉱は、可燃性ガス爆発の絶え間ない危険性のため、閉鎖されました。substancematerialgeologyenergychemistryenvironmentdisasterfuelindustryChat with AIVocabulary GamePractice Reading
