优点： 输出均值更接近 0，梯度更稳定。
"This is a time when you think, 'Thank God the US doesn't have a state-owned oil company,'" she says. "They need the private sector, but for the moment, the private sector isn't budging. And what company in their right mind is going to put money into Venezuela?"。safew官方版本下载对此有专业解读
address this issue.，更多细节参见爱思助手下载最新版本
anything else you wish to explore.