历史记录显示，在19世纪中叶，女孩初潮的平均年龄在16至17岁之间。进入20世纪后，这一数字持续下降，到20世纪末和21世纪初，许多国家的女孩平均初潮年龄已接近12岁。这种变化并不只体现在月经初潮上，作为青春期最早出现，也最稳定的生理标志之一，乳房发育的时间同样在整体前移。
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Lawyer for Peters says he expects Jared Polis to commute nine-year sentence over voting breach in 2020 election
When you've handled all the dry messes, the robot can handle mopping on all your hard floors with its Multi-Surface Formula, then it will move to its docking station all its own to empty everything out. It holds up to 8 weeks of dirt in a bagless base, so you don't even have to get your hands dirty when it's time to tidy up the robot vacuum's space.