地上凿洞

例句：

1. 1. The engineer excavated a new road through the mountain.
   工程师在山中开凿了一条新路。
2. 2.The team excavated the foundation for the new building.
   团队为新建筑挖掘了地基。
3. 3. The scientist excavated samples from the ancient tombs.
   科学家从古墓中挖掘样本。