Unions argue that "one day less" can be good for energy, productivity and society, and that normalising four‑day patterns can keep people in work who might otherwise drop out altogether.
2026-02-28 11:15去年还说去火星，今年要在月球建城市，马斯克是变脸还是有新计划？飞说智行
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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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Trial launched to 'help spot health risks early'