In short, for each Arabic numeral, there is one, and only one, Roman numeral which maps to it.
简而言之，每个阿拉伯数字对应一个罗马数字，而且只有一个罗马数字映射到它。
This game signaled the return of our very own Captain Marvel, the one and only John Terry.
这场比赛标志着我们唯一的神奇队长约翰·特里的回归。
Here he is, the one and only Van Morrison!
他来了，这盖世无双的范•莫里森！
Hello my one and only love, I miss you every day and can not even sleep.
您好，我唯一的爱，我每天都想念您，甚至不能睡觉。
But this class needs to implement one — and only one — interface.
但是，此类需要实现一个接口，而且只实现一个接口。
If a category always drills to one and only one category then the two levels should be merged.
如果一个分类总是属于一个且只属于一个分类，那么这两个层次就应该合并。
He walked the Nineveh to tell the people there about the one and only God.
他前往尼尼微并告诉那里的人们关于我们唯一的上帝的事迹。
Every node has one and only one primary node type.
每个节点都有且只有一个主节点类型。
The day before she died, unexpectedly at home, I told her I loved her; the one and only time I can recall saying those words to her.
在她去世的前一天，我自己都没料到，在家，我会告诉她我爱她，这是我能回想起来的唯一一次我说这三个字给她听。
Evidently one, and only one, tiny leaf beetle can dance on this pin's head — the silvery circle in this 40 X photo.
显然一个，并且只有一个，小小的叶甲才能在这个大头针顶——这张40倍图片上银色的圆周——上跳舞。
It is the one and only Wonder that does not need speculations concerning its appearance, size, and shape.
也是唯一一个不无需要我们推测对其外观、大小以及形状进行推测的奇迹。
The one and only way in which I have been able to clear this away is to turn my mind and thoughts to good and to God.
而我能摆脱这种情结困扰的一种也是唯一的一种方法是将心灵和思想转向从善和信仰上帝。
A child (or derived) class can have one and only one parent (or base) class.
一个子(或继承的)类只可以有一个父类(基类)。
With one mouse click, a user can choose one and only one option.
当鼠标单击时，用户能够且只能够选择一个选项。
Multiple Tasks can be associated to one and only one Issue.
多个任务可以联系到一个且唯一一个问题上。
For example, a query can be constrained to return one and only one result, or only the first 20 selected results.
例如，查询可以限定只返回一个且只有一个结果，或者只返回前20个查询结果。
But fear not, because you have just stumbled upon the one and only article that gives the game loop the attention it deserves.
但别担心，因为你正好遇到这篇文章，这是唯一一篇给予游戏循环应有重视的文章。
Each ID should be a member of one and only one group.
每个ID应该为一个且仅一个组的成员。
There is one and only one integration stream for a project.
对项目有一个且只有一个集成流 。
In fact, vector control is the one and only preventive measure.
事实上，病媒控制是唯一的预防措施。
Each XML document contains one and only one root element.
每个XML文档都有且只有一个根元素。
Verify that for each of the buses there is one and only one bus member as shown below.
验证每个总线有一个且只有一个总线成员，如下所示。
There is one, and only one, cause of death at older ages. And that is old age.
老年人死亡原因有一个，且只有一个，那就是老年。
They've looked at the problem through the lens of their one and only business: advertising.
他们通过自己唯一的业务-广告-来审视这个问题。
Hey, upper east siders, gossip girl here, your one and only source into the scandalous life of Manhattan's elites.
上东区的贵族们，绯闻少女在此，我是你们唯一得到曼哈顿精英们丑闻的渠道。
Additionally, an XML document must have one and only one root element.
此外，XML文档有且只能有一个根元素。
For example, an XML document may have one, and only one, root element.
比如，XML文档必须有且只有一个根元素。
This is the one and only time Henry is known to have visited Wye.
据记载，这是亨利国王唯一一次驾临怀伊。
In the previous use case examples, the rights granted to a principal were derived from one and only one profile.
在上一个用例中，授权主体的权限仅由一个配置文件驱动。
OnSNMP is supported on a host that is running one and only one server.
OnSNMP由一个主机来支持，这个主机运行一个且只有一个服务器。
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