Pennsylvanian era

英 [Pennsylvanian era]
美 [Pennsylvanian era]

中文释义

宾夕法尼亚纪子源

单词分析

单词结构：

Pennsylvanian era

字母数：17

记忆提示

🎯 重点记忆：

  • 单词拼写：Pennsylvanian era
  • 核心含义：宾夕法尼亚纪子源

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更新时间：2026-01-07 04:21:12