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

市场上圆泛滥。

I changed the ink cartridges in my ballpoint pen.

我换圆里的墨水芯。

Most people now use ballpoints rather than ink.

现在多数人舍墨水而使用圆。

A ballpoint pen is adequate for most ordinary purposes.

原适合最普通的用途。

Whereabouts did I leave my ballpoint?

我把圆丢到什么地方？

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金尖墨水、走和旋式原子可供选择。