Primary era

英 [Primary era]
美 [Primary era]

中文释义

古生代

单词分析

单词结构：

Primary era

字母数：11

记忆提示

🎯 重点记忆：

  • 单词拼写：Primary era
  • 核心含义：古生代

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更新时间：2026-03-26 22:59:34