什么是进一退二法倍投法

简介：The third uncle, Su Fang, looked at the time. It was almost seven o'clock, so he took out two hundred yuan and said to Lin Anqin: Sister-in-law, this is the money Su Can and Nuanyang paid for selling melons for me today. You can give it to me later. Come on, kid, I have something to do at home, so I’ll go back first.