“At a time when native-population growth is slowing due to persistently low fertility rates, declining immigration is poised to weigh heavily on labor supply, debt sustainability, and long-term economic growth, with negative effects likely to emerge even in the near term,” researchers at the Deloitte Global Economics Research Center wrote in an analysis published Friday.
公式： f(x)=x⋅Φ(x)≈0.5x(1+tanh[2/π(x+0.044715x3)])，更多细节参见同城约会
这里分享两个我在使用 Ling + Tbox 时摸索出的高阶玩法。。业内人士推荐同城约会作为进阶阅读
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