US-based united airlines has partnered with boom supersonic aerospace company of, Denver Colorado to purchase 15 supersonic aircraft with an option for more.

美国联合航空公司与科罗拉多州丹佛市的Boom超音速航空公司合作，购买了十五架超音速飞机，并有权购买更多。

Many airlines canceled, a number of flights, hundreds, in fact, and where I am at Dulles is a big hub for united airlines.

许多航空公司取消很多班次, 数百次, 事实上, 我身处的杜勒斯是美联航的中心。