This week Chicago became the first big city to abandon its plans for a city-wide network.
本周，在众多大型城市中，芝加哥首先终止了覆盖全城的无线网络计划。
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Such city-wide designs of infrastructure systems aim to enhance recycling and use of alternative energy solutions.
这种城市范围的基础设施体系设计的目的是，推动循环利用和采用可替代能源解决方案。
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It also houses location and environmental sensors that will help build up city-wide air quality maps which other cyclists can use to plan their journey.