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Open the tool →研精殚思 (yán jīng dān sī) is a Chinese idiom (chengyu) meaning “to study diligently and think exhaustively”.
研精殚思 is pronounced yán jīng dān sī in Mandarin Chinese.
Literally, 研精殚思 means “Meticulously research and exhaust one's thoughts”. It is used to mean “to study diligently and think exhaustively”.
专心研究,尽力思考。同“研精竭虑”。