涂污

例句：

1. 1. The stain on the shirt is difficult to remove.
   衬衫上的污渍很难去除。
2. 2. The paint on the wall has a distinct color that was not there before.
   墙上的油漆颜色与之前不同。
3. 3. The stain on the table is caused by spilled coffee.
   桌子上的污渍是由咖啡溅出的。