名词
中文翻译：公国
同义词：
['principality', 'principality']
例句：
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1.The emperor's decree declared the Principality of Wales to be a sovereign state.
皇帝的法令宣布威尔士公国是一个主权国家。
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2. The Principality of Monaco is known for its beautiful beaches and casinos.
摩纳哥公国以其美丽的海滩和赌场而闻名。
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3. The Principality of Alba was once a powerful kingdom in medieval Europe.
阿尔巴公国曾是中世纪欧洲的一个强大王国。