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second-class maintenance
second-class maintenance
英
[second-class maintenance]
美
[second-class maintenance]
中文释义
二级保养
单词分析
单词结构:
second-class maintenance
字母数:24
记忆提示
🎯 重点记忆:
单词拼写:second-class maintenance
核心含义:二级保养
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更新时间:2026-03-11 15:49:48