Aerobatic aircrafts perform during the Australian International Aerospace and Defence Exposition at the Avalon Airfield, southwest of Melbourne, Australia on March 3, 2017. (Xinhua/Bai Xue)
Aerobatic aircrafts perform during the Australian International Aerospace and Defence Exposition at the Avalon Airfield, southwest of Melbourne, Australia on March 3, 2017. (Xinhua/Bai Xue)