filling for groyne

例句：

1. 1. The engineer designed the groyne to support the weight of the water.
   工程师设计了拱桥来承受水的重压。
2. 2. The filling for the groyne was made from recycled materials.
   拱桥的填充材料是由回收材料制成的。
3. 3. The construction crew carefully filled the gaps in the groyne with concrete.
   施工队小心翼翼地用混凝土填补拱桥的缝隙。