butt joint corner

例句：

1. 1. The doctor examinedthe patient's butt joint andfound no signs of injury.
   医生检查了患者的臀部关节，没有发现任何受伤的迹象。
2. 2.The patient was advised to avoid heavy liftinguntil the butt joint healed.
   患者被建议在臀部关节愈合之前避免重举。
3. 3. The butt joint is a crucialpart of the human body that supports movement.
   臀部关节是人体支撑运动的关键部分。