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People visit the international helicopter industry exhibition HeliRussia 2020 in Moscow, Russia, on Sept. 16, 2020. The exhibition is held here from Sept. 15 to Sept. 17. (Photo by Alexander Zemlianichenko Jr/Xinhua)
People visit the international helicopter industry exhibition HeliRussia 2020 in Moscow, Russia, on Sept. 16, 2020. The exhibition is held here from Sept. 15 to Sept. 17. (Photo by Alexander Zemlianichenko Jr/Xinhua)