enamel badge

例句：

1. 1.The dentist gave him a enamel badge as a reward for his hard work.
   牙医给他颁发了一个牙釉质徽章作为对他努力工作的奖励。
2. 2. The school awarded the student with an enamel badge for his excellent performance in the science competition.
   学校授予学生一个牙釉质徽章，以表彰他在科学竞赛中表现出色。
3. 3.The medal was presented to the winner of the marathon, who received an enamel badge as a token of appreciation.
   马拉松比赛的获胜者被授予一枚奖牌，作为对其辛勤工作的认可象征。