n.圆珠笔，原子笔
Roll-on deodorant uses the same technology as the ballpoint pen.───Roll-on 除味剂采用的技术和圆珠笔一样。
He snapped the cap on his ballpoint.───他吧嗒一声扣上圆珠笔的笔帽。
Ink can be pretty tough to get out, but most ballpoint pen ink stains come out with lots of persistence and patience.───墨迹很难清除，不过，只要有足够的恒心与耐心，大部分圆珠笔印迹都是可以清除的。
Ink can be pretty tough to get out, but most ballpoint pen ink stains come out with lots of persistence and patience.───墨迹很难清除，不过，如果你有足够的恒心与耐心，大部分圆珠笔印迹都是可以清除的。
He gave me a 5p ballpoint pen to prove the point that the Taliban were not against education.───他送给了我一支5便士的圆珠笔，以此证明塔利班并不反对教育。
It's easy to write on this white strip using an ordinary ballpoint pen, pencil, or felt-tip marker.───可以很容易地用一般圆珠笔，铅笔，或毡尖在这条白色标记带上做标记。
To mouse proof your house, check all small openings with a ballpoint pen - if it fits the hole, it will let mice in.───要使你的房子里没有小老鼠，用圆珠笔来检查下所有的小洞，如果圆珠笔能放进去的话，那小老鼠就可能钻进去。
I think the modern fountain or ballpoint pen is one of the greatest contributions ever made to man's hanppiness.───我想现代的自来水笔或原珠笔是造福人类的最伟大贡献之一吧。
A ballpoint pen is always used to do his exercises.───他的作业总是用圆珠笔做。
There is an overflow of cheap ballpoint pens in the market.