10个数字选2个有多少组合简介：After staring blankly at the huge bone bridge in front of him for a long time, Li Dao had an idea in his mind. He couldn't go out at all, so why not go to the city to explore. Maybe there would be another chance?
After staring blankly at the huge bone bridge in front of him for a long time, Li Dao had an idea in his mind. He couldn't go out at all, so why not go to the city to explore. Maybe there would be another chance?
