名词
中文翻译：公爵的
同义词：
['noble', 'aristocratic']
例句：
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1. The grand duke of the house was very proud of his son's achievements.
这个家庭的公爵非常为自己的儿子的成就感到骄傲。
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2. The grand duchess is known for her elegant style and tasteful decorations.
公爵夫人以其优雅的风格和考究的装饰而闻名。
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3. The grand duke was deeply moved by the young man's courage and determination.
公爵深受年轻人的勇气和决心所感动。