cursor[classno] = h;
https://feedx.site
，这一点在safew官方下载中也有详细论述
缺点：容易饱和（输入过大或过小时梯度接近0，导致梯度消失）
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When they began walking again, they had a "bizarre" interaction with a man who thought they were lost as they were wearing coastal banners while walking in land-locked Shropshire.