pinch-out of coal seam

例句：

1. 1. The miners hadto pinch out the coal from the seam before they could continue their work.
   矿工们必须在继续工作之前，从煤层中抽出煤炭。
2. 2.The engineer carefully pinched outthe fault in the rock, makingit easier for the workers to repair.
   工程师仔细地从岩石中抽出了裂缝，使工人更容易进行修复工作。
3. 3. The companydecided to pinch out its operations in thisregion and focus on other areas.
   该公司决定从该地区撤出其业务，专注于其他地区。