Red and black silk curtains draped all the walls in an alternatepattern.
红色和黑色的丝帘相互交替着挂满墙面。
2
This pattern extends both the translator and router patterns and supports the concept of alternate service providers who offer semantically equivalent services with differing interfaces.
此模式对转换器和路由器模式进行了扩展，支持备选服务提供者（使用不同的接口提供语义等效的服务）概念。
3
If an alternate source doesn't natively expose the same interface, you can apply a transform pattern to the source; however, this pattern is out of this article's scope.