blow pit

例句：

1. 1.The geologist found a blister pit on the surface of the rock.
   地质学家在岩石表面发现了一个鼓包。
2. 2.The mine manager was worried about the risk of gas leaks in the blow pit.
   矿场经理担心矿井内气体泄漏的风险。
3. 3.The engineer inspected the blister pit and determined its cause.
   工程师检查了鼓包，并确定了其原因。