1到12选2个数有多少种组合简介：When Suiying and his wife came out of Ruoyan Clothing Store, they happened to see Su Can and his group. Because they had chatted in the store before, they knew each other.
When Suiying and his wife came out of Ruoyan Clothing Store, they happened to see Su Can and his group. Because they had chatted in the store before, they knew each other.
