stain spots

例句：

1. 1. The old painting had several stain spots on it.
   那幅旧画上有几处污点。
2. 2.The carpet was stained with coffee when he spilled his drink.
   他不小心把饮料洒在了地毯上，地毯上沾满了咖啡渍。
3. 3.The stain spots on the table were caused by the spilled food.
   桌子上的污渍是食物溢出造成的。