chart board

例句：

1. 1.The teacher used the chart board to show us the steps for solving the problem.
   老师用图表板向我们展示了解决问题的步骤。
2. 2.The student used the chart board to draw a diagram of the solar system.
   学生用图表板绘制了太阳系的示意图。
3. 3.The engineer used the chart board to show the progress of the project.
   工程师用图表板展示了项目的进展情况。