breech presentation臀先露;臀位;后肢先产;儿捧母心
breech delivery臀位分娩;臀位生产;产科;臀产式分娩
Footling breech足式臀位
breech cloth缠腰布;围腰布裙
breech lock泡栓;闭锁卡铁
Breech Positions臀位
Ernie Breech布里奇
breech wool大腿粪块毛
breech labor坐产
N-COUNT（可数名词） The breech of a gun is the part of the barrel at the back into which you load the bullets. (枪的)后膛