sheeting for excavation

例句：

1. 1. The team is busy excavating the tunnel for the new road.
   团队正在忙着为新路挖掘隧道。
2. 2.The geologist was uncovering a hidden treasure in the cave.
   地质学家在洞穴里发现了一个隐藏的宝藏。
3. 3.The construction crew was sheeting the foundations of the new building.
   建筑工人正在为新建筑的基础进行挖掘。