bifluoride

例句：

1. 1. The dentist recommended that the patient use a mouthwash containing bifluoride to prevent tooth decay.
   牙医建议患者使用含有氟化物的漱口水来预防蛀牙。
2. 2. The research team found that bifluoride could effectively reduce the risk of lung cancer in smokers.
   研究小组发现，二氟化物能有效降低吸烟者患肺癌的风险。
3. 3. In addition to its antibacterial properties, bifluoride is also used as a foodadditive in some countries.
   除了其抗菌特性外，二氟化物在一些国家还被用作食品添加剂。