b1 security

英 [b1 security]
美 [b1 security]

中文释义

B1级保全

单词分析

单词结构：

b1 security

字母数：11

记忆提示

🎯 重点记忆：

  • 单词拼写：b1 security
  • 核心含义：B1级保全

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更新时间：2026-03-23 11:38:11