n.原子笔...

ballpoint pen的音标：ballpoint pen的英式发音音标为：['bɔ:lˌpɔɪnt pen]ballpoint pen的美式发音音标为：['bɔlˌpɔɪnt pɛn]...

I changed the ink cartridges in my ballpoint pen.我换了圆珠笔里的墨水芯.You can buy the ballpoint pen anywhere.你到哪儿都能够买到这种圆珠笔.Can you give me two refill of each color for the ballpoint pen?能不能请给这支圆珠笔每种颜色配两根替换笔芯?...