secondary era

英 [secondary era]
美 [secondary era]

中文释义

中生代

单词分析

单词结构：

secondary era

字母数：13

记忆提示

🎯 重点记忆：

  • 单词拼写：secondary era
  • 核心含义：中生代

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更新时间：2026-01-15 14:20:54