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由龙之旅全国协作网北京分会成员单位———(北京)天马国际旅行社、北京金台假日旅行社、北京京华旅行社、北京大华旅行社等多家旅行社共同承办的,龙之旅全
Dragon trip by the Beijing branch of the National Cooperation Network members --- (Beijing) Tianma International Travel Service, Beijing Jintai Holiday Travel, Beijing Jinghua Travel Agency, Beijing Dahua Travel Agency and many other travel agencies co-host,