premolars

例句：

1. 1. The dentist examined the patient's teeth and found that they were in good condition.
   牙医检查了患者的牙齿，发现它们状况良好。
2. 2.The child had a toothache and was taken to the dentist for treatment.
   孩子牙痛，被带到了牙医那里治疗。
3. 3.Premolars are the first set of teeth to emerge during childhood.
   前磨牙是儿童成长过程中最先长出的牙齿。