Last Updated
：2025/11/25
open book
Noun
idiomatic
Japanese Meaning
明確で、容易に理解できる事柄（比喩的に、秘密や複雑さがなく、誰にでも分かりやすい性質を持つもの）
Sense（2）
Sense（3）
（ plural ）
Quizzes for review
(idiomatic) Something of which salient aspects are obvious or easily interpreted.
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open book
Her emotions were an open book during the meeting, so no one was surprised by her reaction.
See correct answer
Her emotions were an open book during the meeting, so no one was surprised by her reaction.
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