pre·mo·lar
noun/ˌpriːˈməʊlə(r)/
/ˌpriːˈməʊlər/
- a tooth that is between the canine and molar teeth. An adult human normally has eight of these teeth: two at the top and two at the bottom on both sides of the mouth.
前磨牙：介于犬齿和臼齿之间的牙齿。成年人通常有八颗这样的牙齿：在口腔的两侧，顶部有两个，底部有两个。 - Two of her premolars were extracted.
她的两颗前磨牙被拔除。
- Two of her premolars were extracted.