primary yolk sac

英 [primary yolk sac]
美 [primary yolk sac]

中文释义

初级卵黄囊

单词分析

单词结构：

primary yolk sac

字母数：16

记忆提示

🎯 重点记忆：

  • 单词拼写：primary yolk sac
  • 核心含义：初级卵黄囊

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更新时间：2026-01-18 21:56:54