优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好
As Wolves applied the seal to only their second Premier League victory of the season, Rodrigo Gomes doubling their lead over Aston Villa deep into second-half stoppage time, Rob Edwards hared down the touchline, yelling into the stands as his players started a celebratory pile-on a few yards behind him. It was a moment of catharsis for Edwards, who beat his chest and wellied an advertising hoarding, but for Unai Emery it was a different kind of cue.
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（一）违反国家规定，未经注册登记，以社会团体、基金会、社会服务机构等社会组织名义进行活动，被取缔后，仍进行活动的；
大姨曾拿出自己的嫁妆黄金为二舅在越南买房，但两人四十年没有联系，二舅从未给她打过一个电话。当杜耀豪劝二舅拨通越洋电话，试图化解冰封时，大姨接起后先是嘲讽：“你还记得你有一个大姐啊。”随即以身体不好、无法独自乘机远行为由拒绝聚会，最后留下一句：“最穷的是我，很感谢你们记得我。”