进一退二法倍投法

简介：Next to the school playground, the tree-shaded trees cover the entire street. The camphor trees in autumn are becoming more and more red and charming. The white catkins in the air are flying through the rays of sunlight. There are several white pigeons parked on the huge bronze statue, gurgling. He watched the two teenagers strolling on the street, strolling carelessly, each with their own thoughts.