9个数字选5个有多少种组合

简介：Several opponents exploded with all their strength, and they were initially hesitant. After all, in this environment, the gunman was almost useless. Letting a gunman fight in close combat was almost like four-on-five. Now that one of the opponents has died, even if the gunman is left behind, It's all four on four, not to mention the Gunners are so good.