loose joint hinge

例句：

1. 1.The old wooden door has a loose joint hinge that needs to be repaired.
   这扇旧木门有一个松脱的关节铰链，需要修理。
2. 2.The new car features a sleek design with a loose joint hinge for easy opening and closing.
   这款新车设计简洁，采用松脱关节铰链，便于开关。
3. 3. The old house had a loose joint hinge that caused the door to stick.
   这所旧房子有一个松脱的关节铰链，导致门卡住。