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英汉词典
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be busy at
be busy at
英
[be busy at]
美
[be busy at]
中文释义
忙于
单词分析
单词结构:
be busy at
字母数:10
记忆提示
🎯 重点记忆:
单词拼写:be busy at
核心含义: 忙于
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更新时间:2026-03-18 14:14:45