Yes, it is a class, not an interface.
是的，它是一个类，而不是一个接口。
An interesting observation is that Action is a class and not an interface.
(一个有趣的发现是，Action是类而不是接口)。
The only other thing to watch out for is that an enumerated type is defined using a Class and not an Interface like other model classes.
惟一需要当心的是枚举类型。 它被定义成一个Class，而不是其他模型类中的Interface！
Additionally, altering the static structure of an interface can have undesirable side effects if not approached with caution: One must ensure that all implementers of the target interface are found.
另外，如果不谨慎处理，改变一个接口的静态结构将出现很多不希望的副作用：必须找到目标接口的所有实现者。
It includes an implementation of the JMS interface, but not the JNDI interface.
它包括JMS接口实现，而非JNDI接口。
On the AIX partition, an interface (not shown in the figure above) en0 can be created on top of the Virtual Ethernet adapter ent0 and a valid IP address can be assigned to it.
在AIX分区上，可以在虚拟以太网适配器ent0 上创建接口en0（上图中没有显示），可以给它分配一个有效的IP地址。
Word 2007 seems to have removed that temptation by not providing an interface in which to apply multiple templates.
Word 07不再提供应用多重模版的界面，看起来是要放弃这种引诱了。
Although they are modeled as events and represented by interface attribute, an element's attributes are typically not reported as individual events.
虽然被建模为事件并用接口attribute表示，但元素的属性一般不作为单独的事件报告。
The first principle is: "Program to an interface, not an implementation."
第一条是：“面向接口编程，而非面向实现编程”。
Derived classes are not required to re-state that they implement an interface from their base class, but are permitted to do so. (This case is special; see below for more details.)
派生类可以指明它实现了其基类的接口，但是并不是一定要这么做。
Well yes and no, while conceptually it is like an Interface, it does not have to be statically defined.
可以说是也可以说不是，在概念上它类似于接口，不过却不需要静态定义。
JMS is ideal in this situation because it is an interface specification — not an implementation.
在这种情况下JMS非常理想，因为它是一种接口规范——而不是实现。
Service requesters and providers need not agree on the interface for an interaction.
服务请求者和提供者不需要就用于交互的接口达成一致。
Now, after discussing this interface thing for a while, we noticed that it's not enough to simply define an interface as a set of messages.
在对接口进行了一段时间的讨论之后，我们现在注意到简单地将接口定义为一组消息还远远不够。
This solution is not as desirable as creating an interface from the class.
这一解决方法并不像从类中创建一个接口的方法一样令人满意。
It is not trivial to interface with an accounting package.
与计费程序包接口也不是轻而易举的事情。
If the system hardware does not have a network interface unit, add an L2 interface unit to the server.
如果系统硬件并没有一个网络界面单元，那么您可以向服务器添加一个L2的界面单元。
Note: The maintenance window is not an automatic maintenance policy, but it is configurable using the same interface.
注意：维护窗口并不是自动维护策略，但是可以使用相同的界面进行配置。
It may not always be desirable to have the interface of an end provider as the published interface of an enterprise service on the bus.
将最终提供者的接口作为企业服务在总线上发布的接口的做法可能并不总是最好的做法。
Connect data output of activities that are not released to the process output interface to an end or stop node to avoid dangling outputs.
将未释放到流程输出接口的的活动数据输出连接到某个结束或停止节点，以避免出现悬空输出。
I'm not much of a user interface designer so I like to start with an existing project and tweak it.
我算不上是一名用户界面设计师，所以我希望从现有项目开始并调整它。
For example, an intermediary that provides logging of messages does not need a strongly typed interface, because it simply logs the content of any message that it receives.
例如，提供消息记录功能的中介不需要强类型接口，因为它只记录其所接收到的所有消息的内容。
If the interface is not well organized, an application with many features becomes a nightmare to use, because it's impossible to find what you are looking for half the time.
如果界面的组织不够好，功能众多的应用程序只是一场噩梦，因为一半时间都在寻找您需要的功能。
JNDI is not an LDAP-specific interface; you can have a JNDI implementation for any type of directory service.
JNDI不是特定于LDAP的接口，因此可以拥有针对任何目录服务类型的JNDI实现。
In other words, you may not select a destination that has an interface with a different operation name, input, or output than the selector itself.
换句话说，与选择器本身相比，您选择的目标不能具有不同操作名称、输入或输出的接口。
The key point about Digital Physics is that it's intuitive; it does not to make the user work hard. The goal is to have an interface that is obvious.
数字物理学的另一个要点是它对用户而言是自然而然的，不需要用户学习，用户界面应该是显而易见、手到擒来的。
Still, he suggests it will not be long before users see built-in translation tools and possibly an English-language interface, the necessary precursors to global expansion.
不过，他透露，用户不久将在新浪微博看到内建的翻译工具以及可能还会出现英语的界面，这些都是向全球扩张的必要前奏。
A class (whether abstract or concrete) that implements an interface does not really inherit anything from the interface it implements.
一个类(不管是抽象的还是具体的)实现一个接口并不真正从它实现的接口继承任何东西。
And while not suited to every situation, a tiny highlight can make all the difference in polishing an interface.
不过并不是所有情景都适合高光的存在，一个细微的高光就能造成物体表面抛光度的巨大不同。
An interface that is simple for one user might not be simple for another.
一个界面可能对于某个用户而言很简单，但对于另一个用户而言可能并不尽然。
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