perpetual day

英 [perpetual day]
美 [perpetual day]

中文释义

极地永昼(地球南北极每年各有六个月全是白昼)

单词分析

单词结构：

perpetual day

字母数：13

记忆提示

🎯 重点记忆：

  • 单词拼写：perpetual day
  • 核心含义：极地永昼(地球南北极每年各有六个月全是白昼)

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更新时间：2026-03-07 07:02:04