sandpapering

I rounded off the corners with sandpaper.

我用砂纸把棱角光滑。

He rubbed the woodwork down with sandpaper.

他用砂纸把木结构的部光滑。

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

拿张砂纸把框的边圆。

Burn off the old paint,fill any cracks in the woodwork,and rub down well with sandpaper.

将这件木的漆烧掉,填补好上面的裂缝,再用砂纸光。