Pen
2008-06-06 – 3:56 上午<p>A <strong><a href=”http://www.pen-manufacturers.com”>pen</a></strong> (Latin <em>penna</em>, feather) is a writing instrument used to apply ink to a surface, usually paper. There are several different types, including ballpoint, rollerball, fountai<A title=”Fountain pen” href=”/wiki/Fountain_pen”>n</A>, and felt-tip. Historically, reed pens, qull pens, and dip pens were used.</p>