One in every five young people has a sleep problem, so you're not alone. Getting enough sleep has become as important as eating vegetables and exercising regularly. It's very important for your body.
基本上五个年轻人中就会有一个人有睡眠的问题，所以你的情况比较普遍。其实充足的睡眠对人体来讲的重要性就像我们身体要摄取的蔬菜还有计划性的运动是一样的。
Five regular polyhedron solutions are given by analysing commonness of other special solutions of N-body problem.
分析n体问题一些特解的共性，给出5个正多面体解。
Five regular polyhedron solutions are given by analysing commonness of other special solutions of N-body problem.
分析n体问题一些特解的共性，给出5个正多面体解。
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