needle sharpener for record player

例句：

1. 1. I need a needle sharpener to sharpen my pen.
   我需要一个针尖磨刀石来磨我的钢笔。
2. 2. She bought a new pencil sharpener for her daughter's birthday.
   她为女儿的生日买了一个新的铅笔尖磨刀石。
3. 3. The teacher gave us a lesson on how to use a pencil sharpener.
   老师教我们如何使用铅笔尖磨刀石。