名词
中文翻译：双重的
同义词：
['dual', 'dualistic', 'duality']
例句：
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1. The two teams are playing a friendly match.
两队正在举行一场友谊赛。
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2. The dual purpose of the project is to improve both economic and social conditions.
该项目的双重目的旨在改善经济和社会条件。
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3. The dual role of the president in this country is both symbolic and practical.
总统在这个国家的双角色既是象征性的又是实际的。