名词
中文翻译：民用航空线路
同义词：
['civil aviation routes', 'civil air routes例句：1. The airline has announced plans to expand its civil aviation lines.（该航空公司宣布计划扩大其民用航空线路。）2. The new airport is designed to serve the civil aviation lines of the region.（新机场的设计旨在服务于该地区的民用航空线路。）']
例句：
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1. The airline has announced plans to expand its civil aviation lines.
该航空公司宣布计划扩大其民用航空线路。
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2. The new airport is designed to serve the civil aviation lines of the region.
新机场的设计旨在服务于该地区的民用航空线路。
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3. The government has proposed a plan to improve the safety of civil aviation lines.
政府提出了一个计划，以提高民用航空线路的安全性。