Blackboard eraser
01
黑板擦, 粉笔擦
a rectangular tool made of felt or foam used to remove chalk markings from a blackboard
例子
She wiped the equations off the blackboard with a swift motion of the blackboard eraser.
她用黑板擦迅速擦掉了黑板上的方程式。
黑板擦, 粉笔擦
