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52kb Bellevue, a fast growing city, just east of Seattle, uses a system that is gaining popularity around the intersection signals that can adjust in real time to traffic conditions. 位于西雅图东部的贝尔维尤是一个快速发展的城市,它使用了一个在十字路口信号周围越来越受欢迎的系统,该系统可以根据交...