直方图的平均值是什么

简介：Hey, brother Lu, you are not afraid of how many people come. Look at my yard. It is usually lifeless, but it is lively when there are many people. Hey, brother Lu, you will call all the brothers here in a while. They are all your own brothers. So why are you so polite? It’s all up to me. Settling here, let me see who dares to come and cause trouble for me, hum!