card stacker

例句：

1. 1. Our office has a card stacker that helps us keep track of our important cards.
   我们的办公室有一个卡片堆叠器，帮助我们管理重要卡片。
2. 2. The card stacker is designed to sort and organize cards quickly.
   卡片堆叠器设计用来快速分类和整理卡片。
3. 3. The card stacker was invented to help people manage their financial documents more efficiently.
   卡片堆叠器被发明出来，帮助人们更有效地管理财务文件。