pen 钢笔
pencil 铅笔
ballpen 圆珠笔
eraser 橡皮,黑板擦
ruler 格尺
penci-box 铅笔盒
sharpener 卷笔刀 pen 钢笔
pencil 铅笔
ballpen 圆珠笔
eraser 橡皮,黑板擦
ruler 格尺
penci-box 铅笔盒
sharpener 卷笔刀