词语解释
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了如指掌
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形容对情况极为清楚
have sth.at one’s fingertips; know as one know his ten fingers; know like a book; know as well as a beggar knows his bag
- 对他们的活动,他完全了如指掌
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形容对情况极为清楚
have sth.at one’s fingertips; know as one know his ten fingers; know like a book; know as well as a beggar knows his bag
國語辭典
了如指掌
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比喻對事情了解得非常清楚。
瞭如指掌
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本指天下事如掌中物，易於了解。語本論語．八佾：「『知其說者之於天下也，其如示諸斯乎？』指其掌。」後比喻對事情了解得非常清楚。蕩寇志．第三十三回：「雖未出兵打仗，而戰陣攻取之法，瞭如指掌。」或作「了如指掌」、「了若指掌」、「瞭若指掌」。
近义词: 洞若觀火