crushed stone aggregate

例句：

1. 1.The construction crew was busy mixing crushed stone aggregate for the road surface.
   施工队忙于混合碎石集料以铺设道路表面。
2. 2. The engineer recommended using crushed stone aggregate to improve drainage in the foundation.
   工程师建议使用碎石集料来改善地基的排水。
3. 3. The project manager decided to use crushed stone aggregate instead of traditional concrete for the new building.
   项目经理决定使用碎石集料而不是传统混凝土来建造新建筑。