Synchronous - If the consumer crashes while blocking as the service runs, when it restarts it has no way of reconnecting to the invocation in progress, so the response is lost.

同步——如果使用者在服务运行的过程中阻塞时崩溃了，当它重新启动时，将无法重新连接到正在进行的调用，所以响应丢失了。

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It lets the caller know what is going on with the communication lines in use, while the chat conversation with a customer service or technical support representative was in progress.

当客户与客户服务或技术支持代表进行对话时，这种解决方案允许呼叫者了解正在使用的通信线路出现了什么问题。

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Secondary service models are in progress, and many have standardized billing and metering models that have gained acceptance in all levels of business.

还有一些辅助服务模式正在开发过程中，其中许多已将计费和计量模式标准化，现在已受到企业各层的认可。

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Today the service still smacks of work in progress.

ECONOMIST: Commoditising telecoms

The service will face an inspection in December for an initial review of progress made, with the service expected to meet all milestones set by the department by December 2013.

BBC: Care of vulnerable children in Wiltshire 'must improve'

While the challenges in New York are daunting, the 9, 700 communities in America with kerb-side recycling programmes are making considerable progress in providing this relatively new public service in the most cost-effective manner possible.

ECONOMIST: Making states accountable