名词短语
中文翻译：高空飞行
同义词：
['altitude mission', 'high altitude flight']
例句：
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1. The astronauts performed an altitude flight to test the new spacesuit.
宇航员进行了一次高空飞行测试新的太空服。
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2. The pilot executed a successful altitude flight to reach the summit of Mount Everest.
飞行员成功地执行了一次高空飞行到达珠穆朗玛峰的顶峰。
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3. During their altitude flight, they encountered severe weather conditions.
在他们进行高空飞行时，他们遇到了恶劣的天气条件。