What makes an ABB set belong to one state versus a different ABB set from another state are the unique perspective that the set is based on and a level of abstract representation.

与来自另一个状态的不同 ABB 相比，让 ABB 系列属于一个状态的是一个独特的视角，那就是系列基于并是抽象代表的一个层次。

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One group thought about why we need to maintain good relationships (abstract, high-level) while the other focused on how we maintain good relationships (concrete, low-level).

其中的一组思考的是为什么我们需要保持良好的人际关系(一般性，高层次的)，而另一组则关注于如何保持良好的人际关系(具体，低层次的)。

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Abstract: Based on the actuality of current road & bridge project bid works, centered on improving bid quotation level of it, discusses how to raise bid winning rate and economic effect.

根据当前路桥工程施工投标工作的实际，着重围绕提高路桥工程施工投标报价水平，探讨如何提高中标率和经济效益。

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On the most abstract level this is because liquidity earns real rents, those rents are distilled by a perfectly competitive market and ultimately accrue to the owners of the irreproducible factors of production.

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