齿系

例句：

1. 1. The dentist examined my teeth and recommended a cleaning.
   牙医检查了我的牙齿，并建议我洗牙。
2. 2. The child's dental health is an important concern for parents.
   孩子的牙齿健康是家长关心的重要问题。
3. 3. The orthodontist adjusted the child's teeth to improve their alignment.
   正畸医生调整了孩子的牙齿，以改善他们的排列。