jaw stick

例句：

1. 1.He had to hold his jaw in place while he was eating.
   他吃东西时不得不咬紧牙关。
2. 2. The doctor gave him a jaw stick to help him sleep.
   医生给他一个下巴支架来帮助他睡觉。
3. 3.She used a jaw stick to support her head while she was reading.
   她在阅读时用下巴支架支撑头部。