noun 下载 🔗分享 宝石,宝玉 A gem, usually made of minerals. Examples : "The jewelry box was filled with colorful gemstones like rubies, emeralds, and sapphires. " 那个珠宝盒里装满了色彩鲜艳的宝石,比如红宝石、祖母绿和蓝宝石。 mineral material geology 与AI对话词汇游戏阅读练习