This is all abstract and not concrete.

这太抽象了，一点都不具体。

youdao

A concrete service provider is a component that is not abstract nor a component.

所谓联合的服务提供商就是一个既不抽象又不是构件的构件。

youdao

A class (whether abstract or concrete) that implements an interface does not really inherit anything from the interface it implements.

一个类(不管是抽象的还是具体的)实现一个接口并不真正从它实现的接口继承任何东西。

youdao

It's an interesting question as to whether he really explains how a child goes from a concrete thinker to an abstract thinker, or how he goes from not having object permanence to understanding object permanence.

问题是,他是否真的解释了,儿童思维是如何从具体向抽象转变的,或是真的解释了,儿童的客体永存性概念是如何从无到有的

耶鲁公开课 - 心理学导论课程节选

We are making this America's national mission: improving our schools not in unrealistic ways, not in abstract ways, not in pie-in-the-sky ways -- in concrete ways we are putting our resources behind the kinds of reforms that are going to make a difference.

WHITEHOUSE: President Obama Announces $4 Billion Investment in Education | The White House