巷子里有自己一年一度的“春晚”。大人们搬起小凳子坐在树下，我们几个孩子自告奋勇，上台表演——节目全是模仿大人看的那些。每个人都身兼数职，忙得不亦乐乎：走完模特步，要接着唱流行歌，还要讲段小品。这是真正意义上的“草台班子”：唱跑调了就鼓掌，跳错了就重来，忘词了就现编。
优点：输出在 (−1,1)，比 sigmoid 居中，对梯度更友好。业内人士推荐51吃瓜作为进阶阅读
他說：「美國的一些最大貿易夥伴，例如歐盟和日本，會發現自己完全回到了上週相同的位置。」。业内人士推荐服务器推荐作为进阶阅读
Efficient distribution: We rely on a known and proven distribution method - more on that later!
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