prong key

例句：

1. 1.The prong key is used to secure the door.
   这个钩子用来固定门。
2. 2.The carpenter used a prong key to remove the screws.
   木匠用一个钩子来拔螺丝。
3. 3.The prong key was the only thing that could open the lock.
   那个钩子是打开锁的唯一东西。