barium crown

例句：

1. 1. The dentist used a barium crown to repair the damaged tooth.
   牙医用一个钡冠来修复那颗损坏的牙齿。
2. 2. The patient was given a barium crown to prevent further damage to his teeth.
   患者被给予一个钡冠以防止他的牙齿进一步受损。
3. 3.The barium crown was designed to fit snugly over the tooth and protect it from further damage.
   这个钡冠设计得可以紧密地套在牙齿上，以保护它免受进一步的损害。