名词
中文翻译：索引板
同义词：
['index card', 'index sheet', 'index chart']
例句：
-
1. Theteacher uses an index board to show the students the answers.
老师使用索引板向学生展示答案。
-
2. The index board is used to mark important points on a whiteboard.
索引板用于在白板上标记重要点。
-
3.The index board is usually placed at the front of the classroom for easy reference.
索引板通常放在教室前面，便于参考。