1. The carpenter sanded the wooden table until it was smooth and polished.
木匠用砂纸将木桌打磨得光滑而有光泽。

2. After painting the walls, they sanded them to create a smooth surface for the next coat.
他们在涂完漆后，用砂纸打磨墙壁，以便给下一层涂料创造一个光滑的表面。