Ideally, every key value in the index is unique.

理想情况是，索引中的每个键值都是惟一的。

youdao

The key value indicates the type of relationship being asserted.

键值表明要声明的关系的类型。

youdao

The methods of this class manage (key, value) pairs and multivalue fields.

该类的方法将管理（关键字，值）对和多值字段。

youdao

The value of the euro currency has plunged for example, which makes American exports - key to the U.S.economic recovery - less competitive.

VOA: standard.2010.02.26

So it doesn't matter how big the dictionary is, you can instantaneously retrieve the value associated with the key. Extremely powerful.

因为你可以在线性时间，内得到想要的键对应的值,这太强大了。

麻省理工公开课 - 计算机科学及编程导论课程节选

Remember the way dictionary works, this is the key. Is the key of a value.

记住这个字典的工作原理，这是关键，它是值的关键。

麻省理工公开课 - 计算机科学及编程导论课程节选

Like all of the gurus I follow, he included a key value-based component in his method.

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The firm will remain as a hierarchical bureaucracy, with the managers acting as controllers of individuals, work being coordinated by plans, rules and reports, the key value being efficiency and communications top-down.

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Most of the value, though, emerges from a creative rethink of the business playscript, for it holds the key to value generation at the business level.

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