画面里多是笨重的老电视、蓝色玻璃窗、Windows XP桌面、童年卧室空荡的作业桌，画质粗糙，写着“你醒啦，这是2000年的午后，你做了一个很长很长的梦”。
特点：负区间平滑非零，避免 ReLU 死区问题。
，更多细节参见夫子
Standard Digital
However, Tolley points out that humans don't move the way fans spin, at all. "We want to be able to lift things, and push things, and do things that require a lot of force and torque."
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