A port type is a named set of the abstract operations and messages involved.

端口类型就是命名了的一组抽象操作和涉及到的消息集合。

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A triangle is a basic drawing operation on which you can build more abstract operations.

三角形是基本的绘图操作，在此基础上可建立更为抽象的操作。

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The WSDL then defines how the abstract operations are bound to the actual end points available to clients.

WSDL 随后将定义如何把抽象操作与客户机可用的实际端点绑定在一起。

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Usually, military operations are talked about in the abstract, as if they're lines on a chalkboard, or brightly glowing diagrams on a computer screen.

CNN: Commentary: Where heroes come from