noun🔗Share炭田, 炭鉱Any region containing deposits of coal that may be mined."The Appalachian coalfield provides fuel for many power plants in the eastern United States. "アパラチア炭田は、米国東部の多くの発電所に燃料を供給しています。geologyareaenvironmentgeographymaterialindustryfuelChat with AIVocabulary GamePractice Reading
