Lumierae
2021-03-06T07:42:41+00:00
韩国人数学是多差啊
没人发现这个等差数列?
[img]https://img.nga.178.com/attachments/mon_202103/10/-ncoxtQbse0-l44vK21T3cSsg-d5.jpg.medium.jpg[/img]
没人发现这个等差数列?
[img]https://img.nga.178.com/attachments/mon_202103/10/-ncoxtQbse0-l44vK21T3cSsg-d5.jpg.medium.jpg[/img]