It's only an abstract idea.

这仅仅是一个抽象的概念。

youdao

An abstract idea or notion; a unit of thought.

一个抽象的观念或想法；一个思维单位。

youdao

Let us first find out what love is, not as an abstract idea but what it actually is.

我们首先来弄清爱是什么，不是一个抽象的概念而是爱实际上是什么。

youdao

Kappos, rejecting a patent on weather derivatives because it covered an an abstract idea.

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But I think probably more importantly, it's the abstract idea of an ultimate authority figure, and to date I think we haven't changed out perception of that person from male to female, or without gender.

NPR: Marin Alsop Takes over Baltimore Symphony

The idea of becoming conscious of the subjectivity of our perceptions is an admittedly abstract one -- the stuff of philosophy and science fiction.

CNN: The power of perceptions: Imagining the reality you want