膝盖 膝英释
Lucy had a bandage round her knee..露西的膝盖上缠着绷带。
a knee injury.膝伤
knee joint,膝关节；弯头结合
on one's knee,◎(恳求、祈祷、屈服时)跪着
knee pad,n. 护膝
knee jerk,[医]膝反射
