石せき炭たん層そうじ字FuriganaAudioMeanings1nouncoal seam; coal bedGeological term for a layer of coal in the ground.この地ち域いきには厚あつい石せき炭たん層そうがある。Break this sentence down in the analyzerThere is a thick coal seam in this area.See all 6 example sentences ›