殫精竭慮

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Chinese

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entirely; to exhaust
energy; perfect; excellent
energy; perfect; excellent; refined; very; proficient
 
exhaust anxiety
trad. (殫精竭慮)
simp. (殚精竭虑)

Pronunciation

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Idiom

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殫精竭慮

  1. to exhaust one's energy and rack one's brain