solution breccia

例句：

1. 1. The engineers were workingon a solution to the problem.
   工程师们正在解决一个难题。
2. 2. The construction crew usedslag to fill in the gaps in the wall.
   建筑工人用渣滓填充墙壁的缝隙。
3. 3. Thesolution breccia wasused as a building material forthe new bridge.
   解方石被用作新桥的建设材料。