skeleton crystal

例句：

1. 1. The skeleton crystals in the museum are fascinatingto watch.
   博物馆里的骨骼晶体令人着迷。
2. 2.The skeleton crystals were usedto study the ancient human evolution.
   骨骼晶体被用来研究古代人类的进化。
3. 3. The skeleton crystals revealed a new species offish that had never been seen before.
   骨骼晶体揭示了一种从未见过的新鱼类物种。