Flanking both sides of the closet are walls that can be drawn upon with dry-erase markers.

壁橱的两侧是空白的墙面，可以在上面绘画，然后干擦掉这些标记即可。

youdao

If you ask most people, they'd tell you there's nothing wrong with the standard classroom set-up of a blackboard and chalk, or a whiteboard and dry-erase markers.

ENGADGET