Definition
The plural form of 'tooth'.
牙齿
He brushes his teeth twice a day to maintain good oral health.
他每天刷牙两次以保持口腔健康。
She went to the dentist for a check-up on her teeth.
她去看牙医检查她的牙齿。
After the orthodontic treatment, his teeth now look very aligned.
经过牙齿矫正治疗后，他的牙齿现在看起来非常整齐。