ballpoint pen

A ballpoint pen is adequate for most ordinary purposes.

笔适合最普通的用途。

I changed the ink cartridges in my ballpoint pen.

我换了圆笔里的墨水芯。

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

市场上圆笔泛滥。

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

徽章系列有18K金笔尖墨水笔、走笔和旋式子笔可供。