how to spray for the rust

例句：

1. 1.The paint sprayed on the wall isstill wet.
   墙上喷的油漆还湿着。
2. 2. The painter used a spray gun toapply the paint.
   画家用喷枪涂油漆。
3. 3. The gardener sprayed the flowerswith water to keep them fresh.
   园丁用水喷洒花朵以保持新鲜。