cutting excavation

例句：

1. 1. The engineer was cutting a deep excavation in the desert.
   工程师在沙漠中进行了一场深挖。
2. 2.The construction crew is excavating the foundation for the new building.
   建筑工人正在为新大楼挖掘地基。
3. 3. The team of geologists is cutting through layers of sediment to find the ancient city's remains.
   地质学家团队正在通过层层沉积物来寻找古代城市的遗迹。