research and extension

英 [research and extension]
美 [research and extension]

中文释义

研究和推广

单词分析

单词结构：

research and extension

字母数：22

记忆提示

🎯 重点记忆：

  • 单词拼写：research and extension
  • 核心含义：研究和推广

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更新时间：2026-02-01 21:28:58