单词 | a closed book |
释义 | a closed book a closed book1 → a closed book at book1(3) a subject that you do not understand or know anything about2 → a closed book (to somebody) at closed(2) a subject or problem that someone does not know about or understanda closed book |
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英汉双解词典包含236457条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。