rock asphalt powder

例句：

1. 1.The builders used rock asphalt powder to level the foundation.
   建筑工人使用碎石沥青粉来平整地基。
2. 2.The road was paved with rock asphalt powder for safety reasons.
   出于安全原因，这条道路铺设了碎石沥青粉。
3. 3.The engineer mixed rock asphalt powder with water to make a smoother surface.
   工程师将碎石沥青粉与水混合，制作出更平滑的表面。