名词
中文翻译：空军
同义词：
['Military Air Force', 'Air Forces']
例句：
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1.The Air Force is responsible for maintaining national security.
空军负责维护国家安全。
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2. The Air Force has been training pilots for years.
空军已经训练飞行员多年了。
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3. The Air Force is a critical component of the military.
空军是军事的关键组成部分。