back-up safety devic
查询英语单词中文释义、音标、发音和例句。
back-up safety device
英
[back-up safety device]
美
[back-up safety device]
中文释义
后备安全设备
单词分析
单词结构:
back-up safety device
字母数:21
记忆提示
🎯 重点记忆:
- 单词拼写:back-up safety device
- 核心含义:后备安全设备
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更新时间:2026-09-19 23:59:46