To support immediate destruction, the Calculator WS-Resource has to support the destroy message exchange pattern so that a service requestor can request the resource's immediate destruction.
为了支持立即销毁，计算器Web 服务资源必须支持销毁消息交换模式，只有这样，服务请求者才可以请求资源的立即销毁。
Message exchange pattern: data services could be accessed via the four primary message exchange patterns - request/reply (tight SLA), request/reply (relaxed SLA), fire/forget, and publish/subscribe.
消息交换模式：数据服务可以通过四种主要的消息交换模式被访问：请求-应答（严格SLA）、请求-应答（宽松SLA ），即发即弃和发布-订阅。
Message exchange pattern: data services could be accessed via the four primary message exchange patterns - request/reply (tight SLA), request/reply (relaxed SLA), fire/forget, and publish/subscribe.
消息交换模式：数据服务可以通过四种主要的消息交换模式被访问：请求-应答（严格SLA）、请求-应答（宽松SLA ），即发即弃和发布-订阅。
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