blackboard eraser

复数形式

blackboard erasers

黑板擦, 粉笔擦

a rectangular tool made of felt or foam used to remove chalk markings from a blackboard

The teacher used the blackboard eraser to clean the chalkboard after the lesson.
老师课后用黑板擦清洁黑板。
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。
The students took turns using the blackboard eraser to clear the board before the next class.
学生们轮流使用黑板擦在下节课前擦干净黑板。
He tapped the blackboard eraser against the chalk tray to remove excess dust.
他轻敲黑板擦在粉笔槽上以去除多余的灰尘。
The old blackboard eraser left streaks on the board, so they replaced it with a new one.
旧的黑板擦在黑板上留下了条纹，所以他们用一个新的替换了它。