Amazon’s delivery drones are so loud they are like a ‘giant hive of bees’ – Business Insider
기사내용보기 >> Amazon’s delivery drones are so loud they are like a ‘giant hive of bees’ Business Insider [드론 관련 기사 보기]
Flying 3D printer drones work like bees to fix buildings – BBC
기사내용보기 >> Flying 3D printer drones work like bees to fix buildings BBC [드론 관련 기사 보기]