Sent_en: 2zh The test flights are being used to monitor everything from how easily the plane docks at the terminal gate to the way the in-flight dining and entertainment services work.
Sent_yy: 测试飞行是为了监控飞机上的一切事务，从飞机在航站楼门口停靠的容易度，到飞行中的餐饮和娱乐服务的运作方式。