This is a pen的意思|示意

This is a new pen.

这是支新钢笔。

This is a pen and that's an eraser.

这是一支笔，那是块橡皮擦。

This is because for most of the history of writing with pen and ink, a pen was manufactured from a long, large feather.

因为在历史上很长一段时间里，人们都用一根又长又大的羽毛沾着墨水写字，这种“笔”叫做pen。

This is a pen and that is a pencil.

这是一支钢笔，这是一支铅笔。

It is manufactured a follow sealant to neuter pen with synthetic oil and white carbon black, this sealant possesses good follow performance, and can satisfy the sealing requirement of neuter pen.

用合成油和白碳黑制备了一种中性笔随动密封剂，该密封剂有良好的随动性能，能满足中性笔的密封要求。

This is not a pen. It's a pencil.

这不是钢笔，这是铅笔。