1. 鋼筆
    A pen is a long thin object which you use to write in ink.

2. 寫；書寫
    If someone pens a letter, article, or book, they write it.

    e.g. I really intended to pen this letter to you early this morning...
           我真的打算今天一大早給你寫這封信的。
    e.g. She penned a short memo to his private secretary.
           她給他的私人秘書寫了一份簡短的備忘錄。

3. 欄；圈；棚
    A pen is also a small area with a fence round it in which farm animals are kept for a short time.

    e.g. ...a holding pen for sheep...
           暫時(shí)搭建的羊圈
    e.g. He wasn't sure exactly how a fox could have got into the sheep's pen.
           他不是十分確定狐貍是怎么進(jìn)入羊圈的。

4. 把…關(guān)起來；把…圈起來
    If people or animals are penned somewhere or are penned up, they are forced to remain in a very small area.

    e.g. ...to drive the cattle back to the house so they could be milked and penned for the night...
           將牛群趕回家，這樣就能擠奶并將其關(guān)進(jìn)牛棚過夜
    e.g. The goats are penned in and fodder has to be cut and carried each day...
           山羊被關(guān)進(jìn)圈里，每天都得鍘草運(yùn)料。

5. 監(jiān)獄
    People sometimes say the pen to refer to a prison.

6. 動筆；下筆
    If you put pen to paper, you write something.

    e.g. Whenever he put pen to paper he was at a loss for the right words to break the news.
           他每次一提筆就不知道如何措辭透露這個消息。