specialize 专攻，专门研究， 使专用于，专门经营 0 那位医生专门研究儿科疾病。 That doctor specializes in children's illnesses. 。 这家旅游公司专营包机业务 This travel firm specializes in charter flights.specialize 专攻, 专门研究, 使专用于, 专门经营 • 那位医生专门研究儿科疾病。 That doctor specializes in children's illnesses. • 这家旅游公司专营包机业务 This travel firm specializes in charter flights