颚的

例句：

1. 1.She had a small, sharp chin.
   她有一张小而尖的下巴。
2. 2.The man's jaw was clenched in anger.
   那个人愤怒地咬紧了下巴。
3. 3. His face was set in a stern expression.
   他的脸严肃地绷着。