HomeDictionary刻苦钻研刻苦钻研Wordto study diligentlyTraditional刻苦鑽研Copy wordkè kǔ zuān yánke4ku3zuan1yan2Hear itMeaningto study diligently CC-CEDICTCharacters in 刻苦钻研刻kè苦kǔ钻zuān研yán