| 词汇 | closed book |
| 类别 | 英译汉、汉译英、英汉互译翻译词典 |
| 释义 | closed book closed book n.(名词)A person or thing that cannot be known or understood; something unfathomable or puzzling.完全不懂的人,不了解的事:无法认识或了解的人或物;深不可测或迷惑不解的东西 |
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