There can be only one, and it ACTS as the superclass for all other objects.
该对象只能有一个，并且充当所有其他对象的超类。
It is important to understand that there can be only one state setting for a given test asset.
对于给定的测试资产只能设定一种状态，理解这一点非常重要。
There can be only one root node and all others nodes have to be organized in a hierarchical form.
只有一个根节点，所有其它节点都必须以分层形式来组织。
There can be only one primary interop assembly, which must be signed with a strong name by the publisher of the COM type library.
只能有一个主互操作程序集，而且该程序集必须由COM类型库的发行者用强名称签名。
ServerA: The instance-owning machine (there can be only one instance-owning machine), where ServerA is the actual hostname of the machine.
实例所在的计算机（最多只能有一台驻留实例的计算机），其中 ServerA是这台计算机的真实主机名。
Unable to increase production - land is limited and there can be only one harvest a year - Bordeaux's leading producers focus relentlessly on quality.
无法增加产量——土地的限制，一年只有一次的收成——波尔多葡萄酒主要的生产者们不停的把焦点放在了质量上。
We both agree that there can be only one sane policy to preserve our precious civilization in this modern age: a nuclear war cannot win and must never fight.
我们双方一致认为，为了使人类宝贵的文明能够在当代不毁于一旦，只有一种政策是合理的，那就是：永远不打那种谁也打不赢的核战争。
This means that there is only a single pool of users and groups in the LDAP directory to work with and that there can be only one set of super Portal administrators.
这表示在LDAP目录中只有一个单独用户池和组可以处理，并且只能有一组超级门户管理员。
Since there can be only one un-caught handler per process active at a time, the constructor should be invoked only once; hence, the reason for the singleton pattern.
因为每次只能有一个未捕获的处理程序处理一个活动进程，构造函数应该只被调用一次，因此要采用singleton模式。
For every object in the call flow, there can only be one other object connected to it.
对于调用流中的每个对象，只能有一个其他对象连接到它。
On the one hand, there are tiny microbes and they can only be seen through a microscope.
一方面，有微小的微生物，只有在显微镜下才能看到它们。
And we need to know that the document can list multiple persons (but nothing will go wrong if there is only one, who can be referred to as either addressbook.person or addressbook.person [0]).
而且我们需要知道该文档可以列出多人(但是，如果只有一个人，他可以作为addressbook . person或addressbook . person[0]来引用，那样也不会发生错误)。
Therefore, for every object in the call flow, there can only be one other object connected to it.
因此，对于调用流中的每个对象，都可以只有另外一个对象连接到其上。
There is only one wish realizable on the earth; only one thing that can be perfectly attained: Death.
在尘世上，只有一种愿望能够满足，只有一件事情能够彻底实现，那就是——死亡。
There can only be one transition out of the initial state, and the operation specified for this transition should only be used this once.
初始状态传出的转换只能有一种，而且为此转换指定的操作只应使用这一次。
There is only one limitation to what can be cached — the item must be an object.
对于什么可以被高速缓存这个问题只有一个限制—这个项必须是一个对象。
Each instance, however, can only contain a single XML data tree — in other words, there can only be one root node.
然而，每个实例只能包含一个XML数据树结构—换句话说，只能有一个根节点。
All three techniques can be used in the same website; there is no need to restrict yourself to only one model.
以上的三种技术可以在同一网站的开发中使用；开发人员没有必要将自己局限于某一种开发模型。
For example, interconnecting wind farms that are only 100 to 200 miles apart can compensate for hours of zero power at any one farm should the wind not be blowing there.
例如，相距仅100到200公里的成组风力田可以弥补其中某一块由于无风导致的几小时的零产出。
Then Sartre picks this up and says that the futility of human race is that all men or whether all people want to be perfect, but there is only one creature, entity, who can be perfect. That's God.
萨特针对这一点说，人类的无奈之处就是所有人，都想要完美，但只有一种存在，能够达到完美，就是上帝。
Implementing leveraged growth tactics can be deeply challenging, especially since there are only a limited set of companies that one can look to for examples of how to put this into practice.
执行杠杆型增长战略是个很大的挑战，尤其是目前仅有少数几家公司，可作为范例供大家参考。
Since a project is a logical breakdown of a similar set of functionality, there can only be one test datastore for each Rational test project.
由于一个项目是类似功能集的逻辑分类，因而每个Rational测试项目只可以有一个测试数据存储库。
In that case, there is then only one (presumably closely guarded secret) valid password that can be sent from WebSEAL.
在这种情况下，能够从WebSEAL发出的有效密码只有一个(大概接近于受保护的机密)。
One easy way to handle updates is to have a field appear in a given Notes document that can only be there if a user has edited the document via the form.
处理更新最简单的一种办法是设置一个字段，如果用户通过表单编辑了文档，就让该字段出现在给定的Notes文档中。
That way, you can always find the right volume to install Linux from since there will only be one volume available at this time.
这样一来，您总是可以找到要安装Linux的卷，因为一次只有一个卷可用。
I can only hope with all the world's warriors gathered against us there might be one down there who's up to the task.
我只能希望全世界的勇士，都聚集起来对抗我们才可能有一个在那里，完成这个任务。
There is the 20th century view that the United States and Russia are destined to be antagonists, and that a strong Russia or a strong America can only assert themselves in opposition to one another.
有一种20世纪的观念，认为美国与俄罗斯注定互为对手，认为一个强的俄罗斯或强的美国惟有在相互对立中才可显示自己的威力。
There can only be the One Truth even although it can be expressed in a number of different ways.
即使是以百种不同的方式去表达也依然只有一个“真理”存在。
There can only be the One Truth even although it can be expressed in a number of different ways.
即使是以百种不同的方式去表达也依然只有一个“真理”存在。
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