单词：soft recovery
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US Military Pilot Training Emphasizes Drone Warfare Holloman has long been the testing ground for cutting edge warplanes. These days, German training jets are the few manned aircraft to be seen here. The skies at Holloman are now ruled by remotely-pi
发表于:2019-01-13 / 阅读(42) / 评论(0)
VOA标准英语2012年(八月)
VOA标准英语2012年(八月)
A flying robot piloted by brainwaves is just one of the ingenious new devices coming out of a top US university. Students are showing off their latest creations at the Maryland Robotics Day including the Neuro Sky Mindset and a snake-inspired search-
发表于:2019-02-14 / 阅读(44) / 评论(0)
世界各地新闻集锦
世界各地新闻集锦