blackboard eraser
复数形式
blackboard erasers
1
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。