underjaw

基本解释

• 下颌

同根派生

英汉例句

• Lack of underjaw should be strictly penalized.
  缺乏下颌属于严重缺陷。
• The underjaw is full and well defined and the nose is black.
  下颌饱满，轮廓清晰，鼻镜是黑色的。