書book 鉛筆 pencil 紙 paper 鋼筆 pen 橡皮 eraser 尺 ruler 鉛筆刀 pencil sharpener 練習(xí)本 exercise book 鉛筆盒 pencil box 圓珠筆 ball point pen 彩色水筆 color felt pen 蠟筆 crayon blackboard 黑板 (a piece o...