名词短语
中文翻译：Unknown
同义词：
['双轨公交系统例句：1. The city is considering a double-bus scheme to improve public transportation.（该市正在考虑一个双层公交车计划，以改善公共交通。）2. The double-bus scheme aims to reduce traffic congestion and improve air quality.（双层公交车计划旨在减少交通拥堵并改善空气质量。）']
例句：
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1. The city is considering a double-bus scheme to improve public transportation.
该市正在考虑一个双层公交车计划，以改善公共交通。
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2. The double-bus scheme aims to reduce traffic congestion and improve air quality.
双层公交车计划旨在减少交通拥堵并改善空气质量。
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3. The double-bus scheme has been implemented in several cities around the world.
全球多个城市已经实施了双层公交车计划。