With apparentness of elder period, studies on them have more and more social and realistic significances. Firstly, thesis does theoretical research to solve epistemological problems.

  • 随着老年期的显性化,对其研究具有重要的社会和现实意义。首先进行理论探讨,以解决认识论问题。

  • 互联网摘选 2025-01-20 19:04:59

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