Read Edit View history 用心良苦 yòngxīnliángkǔ painstaking Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 用心良苦 · yòngxīnliángkǔ · painstaking 2026/03/04 用心良苦 yòngxīnliángkǔ painstaking to give a lot of thought to something or to take great pains with well-meaning intent 老师为了提高我们的成绩，真是用心良苦。 expression created sense Mar 4, 2026, 02:25 AM