must have been

英 [must have been]
美 [must have been]

中文释义

na. 必然; must = should 或 would surely; 必须

单词分析

单词结构：

must have been

字母数：14

记忆提示

🎯 重点记忆：

  • 单词拼写：must have been
  • 核心含义：na. 必然; must = should 或 would surely; 必须

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更新时间：2026-01-08 03:02:09