刻苦 kèkǔ HSK7 hardworking Definitions Defs Origin Strokes Stroke Words Sentences Sents 刻苦耐劳 kèkǔnàiláo hardworking to bear hardships and work hard; assiduous and capable of overcoming adversity刻苦钻研 kèkǔzuānyán study diligently to study and research with great effort; to delve into
