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.