open book - Definition & Meaning

a person or a thing that is easy to understand or predicta person or a thing that is easy to understand or predict

The origin of the idiom "open book" can be traced back to the literal act of opening a book and being able to read its contents. The phrase metaphorically suggests that a person is like an open book, readily sharing information about themselves without reservation. While the exact origin of the idiom is unclear, it likely emerged from the idea that a book, when open, reveals its contents and allows others to gain knowledge or understanding. The phrase encapsulates the concept of transparency, honesty, and approachability, emphasizing the willingness of an individual to openly share their thoughts, emotions, or personal experiences without concealing or withholding information. It is commonly used to describe someone who readily expresses their thoughts, feelings, or personal experiences without hesitation.The origin of the idiom "open book" can be traced back to the literal act of opening a book and being able to read its contents. The phrase metaphorically suggests that a person is like an open book, readily sharing information about themselves without reservation. While the exact origin of the idiom is unclear, it likely emerged from the idea that a book, when open, reveals its contents and allows others to gain knowledge or understanding. The phrase encapsulates the concept of transparency, honesty, and approachability, emphasizing the willingness of an individual to openly share their thoughts, emotions, or personal experiences without concealing or withholding information. It is commonly used to describe someone who readily expresses their thoughts, feelings, or personal experiences without hesitation.

例句

I appreciate how she's always straightforward and honest; she's like an open book.
我很欣赏她总是直率诚实；她就像一本打开的书。
His emotions are like an open book; you can tell how he feels just by looking at his face.
他的情绪就像一本打开的书；你只需看他的脸就能知道他的感受。
The company's financial records are an open book, available for anyone to review.
公司的财务记录是一本公开的书，任何人都可以查阅。