first-class mail

英 [first-class mail]
美 [first-class mail]

中文释义

特快邮件

单词分析

单词结构：

first-class mail

字母数：16

记忆提示

🎯 重点记忆：

  • 单词拼写：first-class mail
  • 核心含义： 特快邮件

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更新时间：2026-01-24 22:20:16