1/eraser释义：

n. 橡皮擦除器[计] 清除器

2/eraser使用例句：

Next math class requires pencils， erasers and rulers. Please prepare them in advance.

下节数学课需要准备铅笔、橡皮擦和尺子，请提前准备好。

I erased the previous wrong answer with an eraser.

我用橡皮擦擦掉了之前的错误答案。