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Royal Australian Air Force Roulettes aerobatic team perform during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, Feb. 28, 2019. (Xinhua/Bai Xuefei)
Royal Australian Air Force Roulettes aerobatic team perform during the Australian International Airshow and Aerospace & Defence Exposition at the Avalon Airport, Melbourne, Feb. 28, 2019. (Xinhua/Bai Xuefei)