well-hole car

例句：

1. 1.The well-hole car was used to transport workers underground.
   井下汽车用于运送工人到地下。
2. 2.The well-hole car is a crucial tool for mining operations.
   井下汽车是采矿作业中至关重要的工具。
3. 3.The well-hole car has revolutionized the way we work underground.
   井下汽车已经彻底改变了我们地下工作的方式。