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 miners extracted iron ore from the deep underground mine. " 鉱夫たちは深い地下鉱山から鉄鉱石を採掘した。 geology material industry mineral AIとチャット語彙ゲーム読解練習