名词
中文翻译：海军
同义词：
['marine', 'naval', 'naval', 'maritime']
例句：
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1. The navy is responsible for protecting the country's coastline.
海军负责保护国家的海岸线。
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2. The navy has been involved in numerous operations around the world.
海军参与了世界各地的许多行动。
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3. The navy is known for its strict discipline and high standards of training.
海军以其严格的纪律和高标准的训练而闻名。