基本解释下頜同根派生 underjaw相关词英汉例句Lack of underjaw should be strictly penalized.缺乏下頜屬於嚴重缺陷。The underjaw is full and well defined and the nose is black.下頜飽滿,輪廓清晰,鼻鏡是黑色的。underjaw更多例句