Definition: a dirty mark on something that is difficult to remove Level: B1
你可以通过撒盐来清除地毯上的红酒污渍。
You can remove a red wine ___stain from a carpet by sprinkling salt over it.
我意识到我的裤子上有一个污渍。
I realized that I had a ___stain on my trousers.
咖啡在桌布上留下了一个棕色的污渍。
The coffee left a brown ___stain on the tablecloth.
