rubble filling

例句：

1. 1.The construction crew was busy filling in the gaps with rubble.
   建筑队正在用碎石填补空隙。
2. 2. The road was filled with rubble from the recent landslide.
   道路被近期的山体滑坡填满了碎石。
3. 3. The engineer used a special material to fill in the cracks in the concrete slab.
   工程师使用一种特殊的材料来填充混凝土板中的裂缝。