pennsylvanian periods

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美 [pennsylvanian periods]

中文释义

[网络] 宾夕凡尼亚纪；三亿年前 (pennsylvanian period 的复数)

单词分析

单词结构：

pennsylvanian periods

字母数：21

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🎯 重点记忆：

  • 单词拼写：pennsylvanian periods
  • 核心含义：[网络] 宾夕凡尼亚纪；三亿年前 (pennsylvanian period 的复数)
  • 相关含义：三亿年前 (pennsylvanian period 的复数)

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更新时间：2026-04-13 21:22:50