详细解释:n. 煤, 木炭
vt. 加煤
vi. 加煤
【化】 煤
词型变化：
动词过去式:coaled过去分词:coaled现在分词:coaling第三人称单数:coals英语解释：
名词 coal:
fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous perioda hot fragment of wood or coal that is left from a fire and is glowing or smoldering同义词：ember