noun ダウンロード 🔗共有 鉱山シャフト, 坑道 A vertical hole through the strata to reach the mineral which is being mined. Examples : "The old mineshaft, now fenced off, was a deep, dark hole leading down to where they used to dig for coal. " 今は柵で囲まれた古い鉱山シャフトは、かつて石炭を掘っていた場所に続く、深く暗い穴でした。 geology industry structure building technical work AIとチャット語彙ゲーム読解練習