三角形个数的规律公式图片简介：Jin Qianlei chuckled and said: Just act like a bear, don’t stress it so much, okay? By the way, why did your parents give you such a strange name?
Jin Qianlei chuckled and said: Just act like a bear, don’t stress it so much, okay? By the way, why did your parents give you such a strange name?
