“natural fertility”的概念、定义、翻译、参考文献-科学参考

单词	natural fertility
释义	natural fertility Encyclopedia 法学自然生育率释 natural fertility自然生育率不存在任何有意识的生育控制条件下的生育率。
随便看	branch place branch point branch point of a curve branch point of a morphism branch prediction branch river branch root Branch Secretariat Branch Secretariat for the Eastern Campaigns Branch Secretariat in Yanjing branch series flotation branch string connection gathering process branch surface branch target address branch target buffer branch testing branch thrust branch version brand advertisement brand agriculture brand associations Brand Blanshard brand books brand color brand communication

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