secondary enamel

• [医] 继发[性]釉质

secondary enamel的用法和样例：

例句

1. Teeth have a hard surface layer called enamel.
   牙齿有一层叫做釉质的坚硬表层。
2. The very earliest proto-whales had tooth enamel that indicated a fresh water diet.
   最古老的鲸鱼所具有的釉质揭示了它们吃新鲜的淡水中的食物。