xylite

例句：

1. 1. The gemstone is said to have healing properties.
   据说这种宝石具有治疗性质。
2. 2. This pyrite crystal was found in the mine.
   这个萤石晶体是在矿里发现的。
3. 3. The fluorite crystals were used for making lenses.
   这种氟化物晶体被用来制作透镜。