ballpoint pen

I changed the ink cartridges in my ballpoint pen.

我换了圆笔里的墨水芯。

A ballpoint pen is adequate for most ordinary purposes.

原笔适合最普通的用。

There is an overflow of cheap ballpoint pens in the market.

上圆笔泛。

Emblema is available as fountain pen with 18K gold nib and ebonite feeder, rollerball pen and twist-action ballpoint pen.

系列有18K金笔尖墨水笔、走笔和旋式原子笔可供选择。