污点

There's a smear on your shirt.

你衬衫有个。

The moths tapped and blurred at the window screen.

飞蛾在窗帘跳来跳, 弄了许多。

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

领子最好办法是使用未稀液体洗洁净。

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

我用小块地毯（或 conceal ) 将地毯遮盖起来。