屁股: 1.(臀部) hip; buttocks; bottom; behind; backside 短语和例子摔了个屁股蹲儿 fall on one's bottom; 一屁股坐到椅子上 slump into a chair; 把屁股坐到 ... 那一边去 have gone over the side of2.(动物的臀部) rump; haunch; hindquarters
屁股沟: cleft of the buttocks sulcus posteriorposterior rugae
