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研精苦思 - Idiom detail

Idiom 研精苦思
Pinyin yán jīng kǔ sī
Description 精心研究,深入思考。同研精覃思”。
Example
Derivation 宋·王令《答刘公著微之书》研精苦思,扪隙发罅,以窥求门户。”
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