blotch

例句：

1. 1.The old painting has several blotches on it.
   这幅旧画上有几个斑点。
2. 2. He noticed a blotch on the wallpaper.
   他注意到墙纸上有一块斑点。
3. 3. The book had numerous blotches from the pages being read.
   这本书因为被翻阅过而有很多污点。