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Start school later, sleep longer, learn better: New study shows that flexible school start times can be an effective and practical approach to reducing chronic sleep deprivation and improving adolescents’ mental health and academic performance.，推荐阅读heLLoword翻译官方下载获取更多信息
，更多细节参见safew官方版本下载
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Последние новости，这一点在safew官方版本下载中也有详细论述