颜色单一

  儿子写的几句话描述某个人的穿着He is wearing a jacket. It's black and white. He is wearing trousers. They're black and white too.我问他：“你会那么多颜色，为啥就写这一种？”儿子回答：“我就突出颜色的单一，因为整天穿校服。”