It is not only a problem in the scope of economics, but also is an important problem that should be solved in the field of sociology, especially in the field of social security.
它不仅仅是一个经济学研究的问题，更是社会学特别是社会保障学要研究和解决的一个重要问题。
Track and Field decreases every year, quality is more obvious, the system is not perfect social security system. 5th, Athletes have few opportunities to participate in high level competitions.
田径后备人才数量逐年下降，质量问题较为突出，社会保障体系制度不够完善。5、运动员参加高水平比赛机会不多。
Track and Field decreases every year, quality is more obvious, the system is not perfect social security system. 5th, Athletes have few opportunities to participate in high level competitions.
田径后备人才数量逐年下降，质量问题较为突出，社会保障体系制度不够完善。5、运动员参加高水平比赛机会不多。
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