idf (international d
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idf (international distress frequency)
英
[idf (international distress frequency)]
美
[idf (international distress frequency)]
中文释义
国际遇险频率
单词分析
单词结构：
idf (international distress frequency)
字母数：38
记忆提示
🎯 重点记忆：
- 单词拼写：idf (international distress frequency)
- 核心含义：国际遇险频率
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更新时间：2026-09-22 02:46:23