它们的作用分别是WSDL服务和数据界面定义，服务位置url，以及访问协议和信息交付规则。
These act as WSDL service and data interface definition, service location URL, and access protocol and message delivery rules, respectively.
服务界面定义了联系协议中参与者的角色。
The service interface defines the roles that the connected participants play in the protocol.
通过Web 2.0协议(如基于REST的服务和JSON)公开信息和服务，可以利用Ajax中实现的浏览器功能形成交互界面。
By exposing information and services through Web 2.0 protocols, such as RESTful services and JSON, highly interactive interfaces can be formed, with browser function implemented in Ajax.
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