4个数字选3个有多少组合简介：In the main hall, located at the top, a middle-aged man wearing a dark green robe stood up, waved his hand downwards, signaling everyone to stop talking, and said what he meant.
In the main hall, located at the top, a middle-aged man wearing a dark green robe stood up, waved his hand downwards, signaling everyone to stop talking, and said what he meant.
