Avoid acidic foods and beverages and carbonated drinks.

避免酸性食物和饮料，不要喝加糖饮料。

Saliva acts as a barrier, protecting the teeth by neutralising acidic foods such as oranges, and the acid produced by bacteria as they break down foods.

而唾液正像一道保护牙齿的屏障，把橘子等酸性食物以及细菌分解食物产生的酸性物质中和掉。