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交通工程▲京津城际铁路正式投入运营。▲胶济客运专线青岛站开通运营。▲北京北至延庆的市郊铁路S2线开通运营。
Traffic Engineering ▲ Beijing-Tianjin intercity railway officially put into operation. ▲ Qingdao Jiaoji passenger dedicated line opened operations. ▲ Beijing North Yanqing suburban railway line S2 opened operations.