The IDENTITY function is a good solution for a surrogate key function in most cases.

IDENTITY函数在大多数情况下是代理键函数的一个好的解决方案。

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The secondary function of an object is to communicate your identity to others.

一个项目的第二功能是向别人传达你的身份。

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You must retrieve the current identity and then use a mapping function to come up with a new identity.

您必须检索当前标识，然后使用映射函数生成一个新的标识。

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But they also serve another very important function, and that was the formation and maintenance of a differentiated ethnic identity or in Priestly parlance, the formation and maintenance of a holy peoples separated out from other nations by rules that mark her as God's people.

但是它们也有另外一个很重要的功能，这个功能形成并维护了,一个分化的种族身份，或者用神职人员的说法，这些规则促使了神圣民族的形成和保持,这个民族和其他的城邦区别开来，被标记为上帝的子民。

耶鲁公开课 - 旧约导论课程节选

The SIM card ( Subscriber Identity Module) in cell phones provide the same function.

FORBES: Leveraging TPM

The design and engineering teams have collaborated on a visual identity that is distinct but discreet, with a motorized tilt function that directs the sound where you want it when the speakers are on, then retreats to flush when no longer needed.

ENGADGET: Bang & Olufsen launches BeoLab 15 in-wall speakers for stealthier beats (update: ears-on)