sitan

例句：

1. 1.The blue crystalstone is said to have healing properties.
   据说这种蓝色的水晶石具有治疗功效。
2. 2. The blue crystalstone was found in a remote cave on the mountain.
   这种蓝色的水晶石在一个偏远的山洞里被发现。
3. 3.The blue crystalstone has been used for centuries as a symbol of purity and power.
   这种蓝色的水晶石被用作几个世纪的象征，代表着纯洁和力量。