self.tags = tags or []
为什么需要非线性？ 想象一下，如果网络里每一层都是线性的（比如 y=Wx+b），无论堆叠多少层，最终网络都只是一条线性映射。深度堆叠就没有意义了，网络的表达能力非常有限。
，详情可参考heLLoword翻译官方下载
"There's no denying it was a challenging start," Dunstan said.
The NYT Connections puzzle today is not too difficult to solve if you're into astrology.
The Artemis II crew - Nasa's Reid Wiseman, Victor Glover and Christina Koch and Canadian astronaut Jeremy Hansen - were at the Kennedy Space Center watching the rocket as it was moved.