1 尺子 rule
2 计算尺slide rule
3 钢笔 pen
4 圆珠笔 ball point pen
5 自来水笔(fountain) pen
6 光笔highlighter
7 头笔permanent marker
8 水性笔roller ball pen
9 白板笔whiteboard marker
10 铅笔 pencil
1 尺子 rule
2 计算尺slide rule
3 钢笔 pen
4 圆珠笔 ball point pen
5 自来水笔(fountain) pen
6 光笔highlighter
7 头笔permanent marker
8 水性笔roller ball pen
9 白板笔whiteboard marker
10 铅笔 pencil