difficult to obtain material

英 [difficult to obtain material]
美 [difficult to obtain material]

中文释义

难于获得的材料

单词分析

单词结构：

difficult to obtain material

字母数：28

记忆提示

🎯 重点记忆：

  • 单词拼写：difficult to obtain material
  • 核心含义：难于获得的材料

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更新时间：2026-01-30 23:07:28