它提供了注入抽像的三个层而你的库在第四个。
It provides three layers of injection abstraction and your library is the fourth one.
置换的结果通常使梦念中一个无色、抽像的概念改变为图画或者是具体的形像。
Displacement usually occurs in such a way that a colourless and abstract expression of the dream - thought is exchanged for one that is pictorial and concrete.
更进一步，他倒置了依赖关系：我们应该基于抽象来写细节，而不是基于细节来写我们的抽像。
Further more it inverts the dependency: instead of writing our abstractions based on details, the we should write the details based on abstractions.
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