miner's inch

例句：

1. 1.The miner's yard is the space between the walls of a mine.
   矿工的庭院是矿井墙壁之间的空间。
2. 2. The miner's measure is used to measure the length of a tunnel.
   矿工的测量用于测量隧道的长度。
3. 3. The miner's yard is important for safety reasons.
   矿工的庭院出于安全原因很重要。