difficult problem

英 [difficult problem]
美 [difficult problem]

中文释义

难题

单词分析

单词结构：

difficult problem

字母数：17

记忆提示

🎯 重点记忆：

  • 单词拼写：difficult problem
  • 核心含义： 难题

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更新时间：2026-03-11 06:05:48