Máy bay siêu nhẹ cất cánh từ ... tay người
Một chiếc máy bay hoạt động nhờ năng lượng mặt trời đãphá kỷ lục thế giới về thời gian bay không người lái trong một lần cấtcánh. Chuyến bay thử nghiệm được tiến hành tại một căn cứquân sự Mỹ...
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