优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好
Because immigrants are likely to be of working age and employed, they also paid nearly $100,000 more in taxes than the average native-born American, the study found. In their absence, national debt would reach approximately 200% of GDP, rather than the currently estimated 120%.，更多细节参见safew官方版本下载
"When areas with fewer resources managed to do it years ago, it's hard to understand why we're waiting until 2027."。关于这个话题，夫子提供了深入分析
Graham, known for his long essays on startups, economics, and the tech industry, was one of the first to comment on the importance of taste in a 2002 essay in which he claimed “taste” is not objective and that “we need good taste to make good things.”
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