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了如指掌的近义词和反义词

了如指掌的词语解释

了如指掌liǎorúzhǐzhǎng

[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] 形容对情况极为清楚

对他们的活动,他完全了如指掌

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