sand,磨砂，paper,纸。

1. Simply sand them down with a fine grade of sandpaper.

只要用细砂纸把它们打磨一下即可。

2. They were settling to their work, rubbing down the woodwork with sandpaper.

他们开始工作，用砂纸把木制品打磨平滑。

3. I rounded off the corners with sandpaper.

我用砂纸把棱角打磨光滑.

4. He rubbed the woodwork down with sandpaper.

他用砂纸把木结构的部分打磨光滑.

5. Take a piece of sandpaper and round off the edges of the frame.

拿张砂纸把框架的边磨圆.