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directorate of research and development
directorate of research and development
英
[directorate of research and development]
美
[directorate of research and development]
中文释义
研究与发展局
单词分析
单词结构:
directorate of research and development
字母数:39
记忆提示
🎯 重点记忆:
单词拼写:directorate of research and development
核心含义:研究与发展局
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更新时间:2026-02-04 16:16:54