noun 다운로드 🔗공유 옥수 A form of fine-grained quartz that is nearly transparent or has a milky translucence; it fractures conchoidally. Examples : "The artisan carefully polished the piece of chalcedony until its milky translucence caught the light beautifully. " 장인은 옥수 조각을 조심스럽게 연마하여 우유빛 반투명함이 빛을 아름답게 포착하도록 했습니다. geology mineral material substance AI와 채팅어휘 게임독해 연습