名词
中文翻译：未改进的跑道
同义词：
['unimproved runway', 'unimproved taxiway']
例句：
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1.The pilot was forced to make an emergency landing on the unimproved runway.
飞行员被迫在未改进的跑道上紧急着陆。
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2. The new airport had a completely unimproved runway for its first flight.
这个新机场的首航使用了完全未改进的跑道。
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3.The aircraft landed safely on the unimproved runway despite the rough weather conditions.
尽管天气条件恶劣，飞机还是安全地降落在了未改进的跑道上。