penster

例句：

1. 1.She used a pencil to draw the picture.
   她用铅笔画了这幅画。
2. 2. The teacher asked us to use a brush to clean the windows.
   老师让我们用刷子擦窗户。
3. 3.He erased all the mistakes with a pencil.
   他用铅笔擦掉了所有的错误。