九个数字选三个有多少组合

简介：Seeing the expressions of everyone, the senior brother nodded with satisfaction, waved his hand and walked towards the pothole first. He was closely followed by many junior brothers, and the group cautiously approached the pothole, all of which were covered by screens. Hold your breath, step by step, and gather your spiritual energy, for fear of waking up the sleeping demon ants in the fire jade.