expansion sliding block

例句：

1. 1. The expansion sliding block is designed to prevent the door from closing too quickly.
   膨胀滑动块设计用来防止门关闭过快。
2. 2. The engineer used a special tool to remove the expansion sliding block.
   工程师使用特殊工具来移除膨胀滑动块。
3. 3. The expansion sliding block was responsible for maintaining the proper alignment of the door.
   膨胀滑动块负责保持门的正确对齐。