noun ダウンロード 🔗共有 鉱石 Rock or other material that contains valuable or utilitarian materials; primarily a rock containing metals or gems for which it is typically mined and processed. Examples : "The miner spent his days digging deep underground, hoping to find rich veins of valuable ores like gold and copper. " 鉱夫は、金や銅のような貴重な鉱石の豊かな鉱脈を見つけようと、深い地下を掘り進む日々を過ごしました。 geology material mineral industry AIとチャット語彙ゲーム読解練習