引入了对异步http请求和响应的标准化支持。
The introduction of standardised support for asynchronous HTTP requests and responses.
Web服务的语义调用主要关注服务请求和响应的标准化，以此来简化编程步骤，使得Web服务调用机制可读，容易理解。
Semantic invocation of Web services will focus on the standardization of service request and response to simplify the programming routine and make the invocation machine readable and understandable.
由于系统变得松耦合，为了对各种事件作出响应，更需要将Web服务接收消息的方式标准化。
As systems become loosely coupled, there becomes a greater need to standardize the way Web services receive messages in response to various events.
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