binder-hole card

例句：

1. 1. This binder-hole card is perfect for organizing your notes.
   这个卡片非常适合整理你的笔记。
2. 2. She used a binder-hole card to keep her important documents safe.
   她使用一个卡片来保护她的重要的文档。
3. 3. The binder-hole card was the only thing that could hold all of their papers together.
   这个卡片是唯一能将所有文件都固定在一起的东西。