noun 下载 🔗分享 晶洞，矿瘤。 A nodule of stone having a cavity lined with mineral or crystal matter on the inside wall. Examples : "Maria cracked open the plain-looking rock and gasped; inside was a beautiful geode sparkling with purple crystals. " 玛丽亚敲开那块看起来很普通的石头，不禁倒吸一口凉气；里面竟然是一个美丽的晶洞，闪耀着紫色的水晶。 geology mineral material nature 与AI对话词汇游戏阅读练习
