简单地改用电动汽车并不意味着城市没有污染。
Simply switching to electric cars will not mean pollution-free cities.
这些反射的太阳光可以节省城市的用电量。
The reflected sunlight would allow the cities to save electricity.
该系统适用于大中城市公用电话计费器的集中控制。
It is applied to centralized manage for telephone booth in the city.
反射的阳光可使这些城市节约用电。
The reflected sunlight would allow these cities to save up electricity.
在座城市里有许多公用电话亭。
该系统适用于城市公用电话自动计费器的网络管理。
This system is applied to network management for booth in the city.
那家发电厂供给我们城市的用电。
那家发电厂供给我们城市的用电。
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