a closed book
查询英语单词中文释义、音标、发音和例句。
a closed book
英
[a closed book]
美
[a closed book]
中文释义
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单词分析
单词结构：
a closed book
字母数：13
记忆提示
🎯 重点记忆：
- 单词拼写：a closed book
- 核心含义：看不懂的书,天书,专业书
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更新时间：2026-08-31 13:49:45