read between the lines
看出行文背后的真实含义，理解言外之意。
用于理解言外之意或潜台词
英文释义
To understand the hidden or implied meanings; to infer or deduce information that is not explicitly stated
例句
Her smile was polite, but reading between the lines, I could sense her disappointment.
典故来源
源自19世纪密码学，指解读隐藏信息，后用于理解话语中的隐含意义。