单词breeze block
un.: 煤渣块;焦渣石网络: 煤渣砌块;焦渣砌块;煤渣水泥砖
煤灰砖(用砂、煤灰和水泥制成):
a light building block, made of sand, coal ashes and cement
焦渣石
煤渣块