了如指掌 liǎo rú zhǐ zhǎng
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liǎo rú zhǐ zhǎng
set phrase
to know something like the back of one's hand
Domain: Idiom 成语
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liǎo rú zhǐ zhǎng
set phrase
to understand as [clearly as] pointing to the palm of the hand
Domain: Idiom 成语
Notes: (CC-CEDICT '瞭如指掌'; Guoyu '瞭如指掌')