During the week of April 21, there were just two passenger-carrying 747 jumbo jets flying around the world. The Covid-19 pandemic has made the Queen of the Skies an acutely endangered monarch.
원문출처 : https://www.cnn.com/travel/article/boeing-747-covid-19/index.html
원문출처 : https://www.cnn.com/travel/article/boeing-747-covid-19/index.html