Later, components and objects evolved allowing for the encapsulation of data (member variables) within them.
后来，组件盒对象发掌起来，使数据可以封装在里面。
It communicates with other components using interfaces and business objects.
它使用接口和业务对象与其他组件通信。
To begin constructing the application, we need a project to hold the business objects, components, and interfaces.
要开始构造应用程序，将需要一个项目来承载业务对象、组件和接口。
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