在医学上，青春期并不是一个模糊的概念。自20世纪中期以来，儿科和内分泌学界主要通过几类指标来判断青春期的启动时间：女孩乳房发育的起始（thelarche）、阴毛出现，以及第一次月经（初潮，menarche）。这些体征被系统地纳入性成熟评定分期体系（ Tanner ），并长期作为国际通用的临床评估工具。
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。业内人士推荐体育直播作为进阶阅读
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O’Leary told Fox Business that he had experienced the situation firsthand. A Gen Z candidate showed up to a Zoom call with their mom also on the line. O’Leary immediately shut down the situation and said that either the mom would have to leave or the candidate would not be considered for the role. He called the situation “a big red flag” and “a really, really bad idea.”