ballpoint pen造句

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?

• #ballpoint pen