“Period of Southern and Northern Courts”的概念、定义、翻译、参考文献-科学参考

单词	Period of Southern and Northern Courts
释义	Period of Southern and Northern Courts Encyclopedia 历史学日本历史释 Period of Southern and Northern Courts南北朝时代日本京都北朝同吉野南朝两个皇统对峙的时代。
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