arming pin

例句：

1. 1. The book was bound with a sturdy arming pin.
   这本书用一个坚固的装订针装订。
2. 2.She carefully placed the arming pin into the book's spine.
   她小心翼翼地将装订针插入书脊。
3. 3.The arming pin was used to secure the pages together during the printing process.
   在印刷过程中，装订针被用来将页面固定在一起。