国四虎影永久去哪里了,日韩精品电影在线一区二区,久久精品国产亚洲av蜜屁股,亚洲成年人黄色小说网站

返回

BBC地平線系列：英國的下一場空難？無人機

類型：紀錄  地區(qū)：英國  年份：2019 

字節(jié)云

劇情簡介

Drones are transforming our world. We use them to deliver our medicines, clean our skyscrapers and even fight fires. But there is a dark side to this airborne revolution, from a shocking rise in drone-plane near misses above our heads to last year's sustained drone disruption at Gatwick – Britain's second largest airport – that ruined the Christmas plans of 140,000 people and c...