涂抹灰泥

例句：

1. 1. The wall was painted with a coat of mortar.
   这堵墙被抹上了一层灰泥。
2. 2. The painter used mortar to fill in the cracks in the wall.
   画家用灰泥填补了墙上的裂缝。
3. 3. The plaster on the ceiling is starting to crumble.
   天花板上的灰泥开始剥落了。