最后，只能有一个假面骑士。
对于调用流中的每个对象，只能有一个其他对象连接到它。
For every object in the call flow, there can only be one other object connected to it.
一次只能有一个任务持有互斥锁，并且只有这个任务可以解锁互斥锁。
Only one task may hold the mutex at a time, and only this task can unlock the mutex.
下面只能有一个房间，因为只有一个烟囱。
There can be but one room below, for there is but one chimney.
每五个失业者只能有一个工作机会，所以五分之四的失业者没有机会找到新工作。
There is literally only one job opening for every five unemployed workers, so four out of five unemployed workers have actually no chance of finding a new job.
注意：每个库只能有一个连接id。
在HTML中每个表单只能有一个动作。
每个计算单元只能有一个部署管理器概要。
There can be only one Deployment Manager profile for each cell.
一个进程在任何时候都只能有一个所有者。
每一个组只能有一个博客。
Each group can have only one blog. To create a blog for your group.
每个映射只能有一个目标业务术语。
以前，用户只能有一个活动帐户（其父组织）。
Previously, a user could only have one active account (their parent organization).
一个术语只能有一个专员。
每个集群只能有一个活动消息传递引擎。
此外，XML文档有且只能有一个根元素。
Additionally, an XML document must have one and only one root element.
每个给定时间只能有一个当前的焦点所有者。
另外，在组件中只能有一个名为items的站点区域。
You must also have only a single site area called items in your component.
他感叹他们只能有一个赢家，因为他们都很出色。
He lamented their only had to be a single winner, because all of them were stellar.
一个门户网站页面只能有一个portlet实例。
一个文件只能有一个根元素，并且需要使用“包装器”包含它。
Only one root element is in the file, and you need this "wrapper" to contain it all.
因为类名称是常量，所以您只能有一个给定名称的类。
Because class names are constants, you can have only one class of a given name.
另外注意，每一行上只能有一个accessmode条目。
Also, note that you can only have one entry on each line for each access mode.
但是在任何给定的context中，对任意模板只能有一个实例。
However you can only have one instance of any template in any given context.
端口的数字可以从0到65535并且一个程序每次只能有一个端口。
Ports are numbered from 0 to 65535 and only one application at a time may register for a single port.
向BPEL导出时，限制每个元素只能有一个输入标准。
Since you are exporting to BPEL, you are restricted to having only one input criterion per element.
在任何瞬间，只能有一个信号处理程序处理一个活动进程的一个信号。
There can be only one signal handler per signal per process active at any instant.
请不要选择该选项，因为简单回归只能有一个变量，而我们有六个变量。
Do not choose this because simple regression only looks at one variable, and we have six.
请注意，CSR可服务于多个商店，但是只能有一个父组织，如图1所示。
Note that a CSR can work for multiple stores, but can have only one parent organization as shown in Figure 1.
请注意，CSR可服务于多个商店，但是只能有一个父组织，如图1所示。
Note that a CSR can work for multiple stores, but can have only one parent organization as shown in Figure 1.
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