noun 下载 🔗分享 玉髓 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. " 工匠小心地打磨着这块玉髓,直到它那乳白色的半透明质地能完美地捕捉光线。 geology mineral material substance 与AI对话词汇游戏阅读练习