更多单词：
圆珠笔：ball-pen，ball-point pen，ball pen，ball-point.
笔记本：notebook， jotter， pocketbook.
橡皮擦：eraser.
尺子：ruler; rule.
墨水：ink，prepared Chinese ink，book learning，writing ink.
削笔刀：penknife.
文件夹：file， folder， paper file.
订书机：stapler，stitcher， book sewer，stapling machine.
小刀：knife，penknife，pocket knife，small sword， lancet.
胶带：tape，adhesive tape，gummed tape.
便利贴：sticky note.