in the mine

• 井下

in the mine的用法和样例：

例句

1. Many coal-miners were imprisoned in a pit accident.
   在一次塌方事故中，许多矿工被压在了井下。
2. It is a new way of the utilization of coal bed gas.
   为井下抽放煤层气的利用提出了一条新的途径。