| 单词 | be an open book |
| 释义 | be an open bookbe an open book KNOW somethingto be something that you know and understand very well 是…非常熟悉的事物，是…很了解的事物 The natural world was an open book to him. 他对自然界了如指掌。 Examples from the Corpus be an open book• I'd always thought of Jeff as an open book.• To them my future was an open book.• Our foreign dealings are an open book generally a check book. → be an open book at open1(7) |
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英汉双解词典包含283110条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。