cretaceous periods

英 [cretaceous periods]
美 [cretaceous periods]

中文释义

白垩纪

单词分析

单词结构：

cretaceous periods

字母数：18

记忆提示

🎯 重点记忆：

  • 单词拼写：cretaceous periods
  • 核心含义：白垩纪

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更新时间：2026-01-07 07:39:16