污点

There's a smear on your shirt.

上有个污点。

The moths tapped and blurred at the window screen.

飞蛾在窗帘上跳来跳去, 弄上了许多污点。

The best way to get stains off collars is to use liquid detergent at full strength.

去除领子上的污点最好的办法是使用未稀的液体洗洁净。

I used a throw rug to hide (or conceal ) the stain on the carpet.

我用小块地毯（或 conceal ) 将地毯上的污点遮盖起来。