英语翻译睡前刷牙比起床后刷牙更重要,这是因为遗留在口腔中和牙齿上的细菌、残留物在夜里对牙齿、牙龄有较强的腐蚀作用.

睡前刷牙比起床后刷牙更重要,这是因为遗留在口腔中和牙齿上的细菌、残留物在夜里对牙齿、牙龄有较强的腐蚀作用.
It is more important to brush our teeth before sleep than after waking up.The reason is that the bacteria and residues left in oral（mouth） cavity and on teeth have an ralatively corrosive effect on teeth.
有点长,
Brushing teeth before sleep outweigh doing it after waking up.There are many bacteria and residues left in oral（mouth） cavity and on teeth.and they have an ralatively corrosive effect on teeth.