名词
中文翻译：开放航线
同义词：
['opening', 'charter flight例句：1. The airline has an open charter service for international flights.（该航空公司提供国际航班的开放航线服务。）']
例句：
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1. The airline has an open charter service for international flights.
该航空公司提供国际航班的开放航线服务。
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2. The captain decided to take the open charter flight to save time.
船长决定乘坐开放航线航班以节省时间。
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3.The pilot had to make an emergency landing on an open charter flight.
飞行员不得不在一架开放航线航班上紧急降落。