slab and edging pass

例句：

1. 1. The builders were using large slabs to build the new bridge.
   建筑工人正在使用大块的石板来建造新桥。
2. 2. The car was parked on a smooth edge stone.
   汽车停在了一块平滑的边缘石上。
3. 3. The workers had to carefully move the heavy slabs without damaging the surrounding area.
   工人们不得不小心翼翼地移动这些沉重的石板，以免损坏周围的区域。