edge-notched card index

例句：

1. 1.The edge-notched card index is a popular tool for organizing and sorting information.
   边缘刻槽卡片索引是一种受欢迎的工具，用于组织和分类信息。
2. 2. This edge-notched card index is designed to help students quickly find important information.
   这个边缘刻槽卡片索引旨在帮助学生快速找到重要信息。
3. 3.The edge-notched card index is often used in classrooms to facilitate group discussions.
   边缘刻槽卡片索引通常在课堂上使用，以促进小组讨论。