我经常和爸爸在家下棋，爸爸下得比我好，总是赢我，但我下决心，
要赢他，有时我私下研究，想提高棋艺，昨天我终于赢了一次。
I often played chess with my father at home. He played better than me and always beat me. But I made up my mind to beat him. Sometimes I studied chess in secret in order to improve the skill in chess. Yesterday I beat him at last.
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