地质学家的锤子敲开岩石，露出一处布满紫水晶晶簇的晶洞。
The geologist's hammer broke open a rock to reveal a vug lined with amethyst points.
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解释
地质学术语，指岩石中的小空洞、晶洞
The geologist's hammer broke open a rock to reveal a vug lined with amethyst points.
地质学术语，指岩石中的小空洞、晶洞