1.Some prescription mouthwashes (those that contain chlorhexidine) can help prevent decay by reducing the number of bacteria in the mouth.
一些处方漱口水（含有氯已定）可以减少口腔细菌数目而预防龋坏。
2.We use calcium and silica to gently clean and fluoride to help prevent decay.
我们使用钙和硅温和的清洁，氟来防止烂牙。
3.It also helps prevent decay in adults and children.
它也同样可以帮助儿童和成人预防龋齿。
4.The wood is treated with preservative to prevent decay.
这块木头用防腐剂处理过以防止腐烂。
5.Spray on garbage to prevent decay odors.
喷雾，以防垃圾腐烂的气味。
6.Salt helps to prevent decay in food.
盐用在食物之中，可以发挥防腐的作用。
7.With blisters and then cold 24 hours or so, the removal of salt, alum suffered salty. * Change regular attention to prevent decay.
然后用冷水泡24小时左右，脱除盐、矾之苦咸味。注意经常换水，防止腐烂。
8.To treat(a corpse)with preservatives in order to prevent decay.
防腐用防腐剂来处理（尸体）以防止腐败