An important feature of services in SOA is that they have descriptions that state clearly what they do and how to interact with them.

SOA当中的服务有一个重要的特性，它们的描述中清楚的陈述了它们会做什么以及如何与它们交互。

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Recoverable processes can store two types of information: transaction state information and descriptions of changes to data.

可恢复流程可以存储两种类型的信息：事务状态信息和数据更改描述。

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You see descriptions of each of the states, followed by the events supported by the state machine. After each event, you see a series of transitions that each event will fire.

您可以看到每一个状态的描述，然后是状态机支持的事件，这之后，是每个事件将要触发的一系列转换。

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So, for example, if we're talking about the n equals 2 state, all of these four orbital descriptions are going to have the same energy.

例如，当我们说n等于2的态，所有这四个轨道的能量,都是相同的。

麻省理工公开课 - 化学原理课程节选

Clarke's assessment also contradicted descriptions by Secretary of State Colin Powell and Defense Secretary Donald Rumsfeld.

CNN: Rice may testify before 9/11 panel by next week

Those were accurate descriptions of the president's state of mind at the time he testified.

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