imperfect joint

例句：

1. 1. The doctor advisedhim to rest for the next few daysdue to his imperfective jointpain.
   医生建议他在接下来的几天里休息，因为他的不完全关节疼痛。
2. 2. The scientist discovereda new way to fix the imperfect joints in the robot's arm.
   科学家发现了一种新的方法来修复机器人手臂中不完全关节的问题。
3. 3. Due to the imperfective joint, the car's steeringwas not as smooth as it should be.
   由于不完全关节，这辆车的转向没有像应该的那样平滑。