高级搜索
搜索“TAG:圆珠笔”找到相关内容2篇,用时0.070410秒
摘要:One day a young mother was playing with her five-year-old son. Suddenly he grabbed her ball-point pen and swallow[阅读全文]
摘要:During the heat of the space race in the 1960s, the U.S. National Aeronautics and Space Administration decided it needed a ball point pen to write in the zero gravity confines of its space capsules.[阅读全文]