名词
中文翻译：行侠仗义的行为
同义词：
['heroic acts', 'chivalrous behavior']
例句：
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1. He is known for his heroic acts in the community.
他以其在社区中的英勇行为而闻名。
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2. She admired her friend's chivalrous behavior towards the elderly.
她钦佩她朋友对老人的骑士般的行为。
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3. The story of the brave knight who saved the princess from a dragon is still told today.
勇敢的骑士救公主的故事至今仍被讲述着。