bolt shackle

例句：

1. 1.The bolt on the door is broken.
   门上的螺栓断了。
2. 2. He used a screw to fix the window.
   他用螺丝固定了窗户。
3. 3.The latch on the door was rusted and couldn't be opened.
   门上的闩锁生锈了，打不开。