The concept of redundant service is defined with the concept of object and instance.

其中用到对象和实例的概念来定义冗余服务。

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Every object is an instance of some class, so "object" and "instance" are interchangeable.

每一个对象都是某一个类的一个实例，所以“对象”和“实例”可以互换来使用。

youdao

And so people, for instance, object to the fact that when there's Italian Americans on TV they're often members of the Sopranos, a mobster family.

例如意大利人很反感，当电视上一出现意大利裔美国人时,他们通常都是黑道家族的成员。

耶鲁公开课 - 心理学导论课程节选

The Germans and French object, for instance, to recent decisions by the commission to enforce competition policy and block subsidies.

ECONOMIST: European Union

What's more, the sensors are apparently also able to detect the proximity of the object and adjust the resistance of the door accordingly -- for instance, slowing the door down if you're about to slam it into a lamp post.

ENGADGET: BMW devises smart car door that senses danger