{u,v,w}/.u→v/.v→z? {z,z,w}{z,w,w}{w,w,z}{w,z,w} {u,v,w}/.u→v/.v→z? {z,z,w}{z,w,w}{w,w,z}{w,z,w} 发布时间:2025-09-15 08:30:37