fredricite

例句：

1. 1.The fluoride in the water is a significant factor in maintaining dental health.
   水中的氟对保持牙齿健康至关重要。
2. 2. The dentist used a special solution to remove the decayed tooth.
   牙医使用一种特殊的溶液来去除腐烂的牙齿。
3. 3.Fluoride treatments are recommended for children to prevent tooth decay.
   建议儿童接受氟化物治疗以防止蛀牙。