Object-oriented design experts advise us to program to interfaces.
面向对象的设计专家建议我们对接口进行编程。
These are tools that the oo designer puts to use in order to structure the analysis, the design, and the implementation, but they aren't central to what makes an oo program object-oriented.
这些是OO设计人员用来构成分析、设计和实现的工具，但它们并不是使程序面向对象的主要部分。
The methods of object oriented analysis and design were applied in the program.
同时强调了面向对象的分析与设计方法在程序中的应用。
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