More than a century ago, the first aviation pioneers figured out a way to use rigid wings with flaps to generate enough force to lift a heavy craft into the sky. (spectrum.ieee.org) 更多...
United started selling premium plus economy seats. Passengers who were booked in what would be come theaw upgraded seats were kicked to the back of the plane e and separated from their party, and were. Ot able to get back together. (onemileatatime.com) 更多...