noun🔗Share矿井，竖井 A vertical hole through the strata to reach the mineral which is being mined."The old mineshaft, now fenced off, was a deep, dark hole leading down to where they used to dig for coal. "那个被栅栏围起来的旧矿井竖井，是个深不见底的黑洞，通向他们过去挖煤的地方。geologyindustrystructurebuildingtechnicalworkChat with AIVocabulary GamePractice Reading
