设计接口是一个面向对象的极好实践，但是我们没办法总能得到遵循此种设计原则遗留代码。

Programming to interfaces is a good oo practice, but we are not always presented with legacy code that follows the practice.

youdao

面向对象的领域模型是解决这个问题的好办法，但传统的分析和设计方法无法确保真实需求和领域模型的统一性，容易造成需求和模型的错位。

Building object-oriented domain models is a good way to resolve this problem, but traditional analysis and design method could not ensure consistency between requirement and model.

youdao

面向对象的领域模型是解决这个问题的好办法，但传统的分析和设计方法无法确保真实需求和领域模型的统一性，容易造成需求和模型的错位。

Building object-oriented domain models is a good way to resolve this problem, but traditional analysis and design method could not ensure consistency between requirement and model.

youdao