WHEN IS BROKER A SELLER NO FURTHER A MYSTERY

{知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。The layered difference in resources — a picture created from simple, domestic paint on the refined and inventive assistance — is noteworthy.mathematics : the diploma or amount of money by which matters vary in quantity or measure specifically :