名词
中文翻译：领空
同义词：
['airspace', 'sovereign airspace', 'national airspace']
例句：
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1. The pilot had to fly within the country's territorial airspace.
飞行员必须飞在国家的领空内。
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2. The aircraft was flying within its sovereign airspace.
该飞机在其主权领空内飞行。
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3. The military plane was flying within the national airspace of the neighboring country.
军用飞机在邻国的领空内飞行。