b2 security
查询英语单词中文释义、音标、发音和例句。
b2 security
英
[b2 security]
美
[b2 security]
中文释义
B2级保全
单词分析
单词结构:
b2 security
字母数:11
记忆提示
🎯 重点记忆:
- 单词拼写:b2 security
- 核心含义:B2级保全
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更新时间:2026-08-27 12:27:40