youdao

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。

youdao

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。

youdao

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