The types Origin and Destination mimic the design I originally outlined in my UML diagram when I use extension base="Address" to show that they inherit the characteristics of Address.

类型 Origin 和 Destination 模仿了我最初在 UML 图中所勾画的设计，这里我使用 extension base="Address" 来表明它们继承了 Address 的特征。

youdao

James Puxty, of the NEC Group whose base is next to the airport, said the runway extension was "really positive news" for the company.

BBC: Birmingham Airport runway extension work starts

Meeting schedules and building on this sales base is critical if the company (and, by extension Japan) is going to be a player in the small scale passenger jet industry.

FORBES: Connect