污点

There's a smear on your shirt.

你衬衫有个污点。

The moths tapped and blurred at the window screen.

飞蛾在窗帘跳跳, 了许多污点。

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

除领子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 ) 将地毯的污点遮盖起。