There's been very little good news to report in the aviation industry over the past few months, with airplanes grounded or pushed into early retirement.
원문출처 : https://www.cnn.com/travel/article/boom-supersonic-rolls-out-xb-1-demonstrator-aircraft/index.html
원문출처 : https://www.cnn.com/travel/article/boom-supersonic-rolls-out-xb-1-demonstrator-aircraft/index.html