crushed slag

例句：

1. 1. The construction site was littered with crushed slag from the excavation.
   施工现场到处都是挖掘出来的压碎的炉渣。
2. 2.The engineer used crushed slag to reinforce the foundation of the building.
   工程师用压碎的炉渣加固了建筑物的基础。
3. 3. The factory had to use crushed slag as a substitute for sand and gravel in its concrete mixes.
   工厂不得不使用压碎的炉渣作为混凝土混合物中的砂和砾石的替代品。