It will allow us to display objects from more than one EMF model by providing an adapter factory that is able to adapt the union of objects from multiple models.

它让我们能够显示来自多个emf模型的对象，具体做法是，提供一个可从多个模型中适配对象集合的适配器工厂。

youdao

The only way you could get the custom adapter was to ask a union worker, whose job was to fetch the custom adapter and plug it in.

FORBES: Unions Are Evil And Weird