knee-joint

例句：

1. 1.He had to sit on the floor for hours while his knee-joint was hurting.
   他的膝盖受伤了，不得不坐在地上好几个小时。
2. 2. The doctor examined my knee-joint and found no signs of injury.
   医生检查了我的膝盖关节，没有发现任何受伤的迹象。
3. 3. She limped as she walked, her knee-joint still sore from the fall.
   她走路时一瘸一拐，膝盖关节还因为那次摔倒而疼痛。