Tea also contains high amounts of fluoride .

茶叶也含有大量坚固牙齿的氟化物。

But how does fluoride work its magic ?

但是为什么氟化物具有如此神奇的功效？

Iron-fortified formulas contain all vitamin and mineral requirements except for fluoride .

铁强化配方中含有所有必需的维生素和矿物质，除了氟化物。

Tap water is best because it contains helpful minerals like fluoride .

水龙头里的水是最好的，因为含有有益矿物质，例如氟化物。

Ask your dentist to determine whether fluoride supplements would be appropriate for your child .

可以请教你的牙医，以确定补充氟化物对您的孩子是否合适。