数学求平均值公式简介：Xiao Xiaobai pinched the bald man's wrist with one hand, and the fingertips of his other hand touched the bald man's thigh with a cold light, causing him to tremble all over and fall to the bed with a cry of pain. .
Xiao Xiaobai pinched the bald man's wrist with one hand, and the fingertips of his other hand touched the bald man's thigh with a cold light, causing him to tremble all over and fall to the bed with a cry of pain. .
