优点： 输出均值更接近 0，梯度更稳定。
Овечкин продлил безголевую серию в составе Вашингтона09:40
。51吃瓜对此有专业解读
Ian YoungsCulture reporter
When she received a phone call saying a womb had been donated and a transplant was possible, Bell remembers being "in complete shock" and "really excited".