挖土

例句：

1. 1. The engineer was excavating a tunnel for the new road.
   工程师正在为新路挖掘隧道。
2. 2.The team of geologists is excavating a cave system in the mountains.
   地质学家团队正在山区挖掘一个洞穴系统。
3. 3.The construction workers were excavating the foundations of the new building.
   建筑工人正在挖掘新建筑物的基础。