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Train station models are displayed at a train exhibition in Dallas, Texas, the United States. "The Trains at NorthPark" exhibition in Dallas has become one of the premier holiday traditions. (Xinhua/Dan Tian)
Train station models are displayed at a train exhibition in Dallas, Texas, the United States. "The Trains at NorthPark" exhibition in Dallas has become one of the premier holiday traditions. (Xinhua/Dan Tian)