By introducing the concept of platform abstraction at the very start, it was much easier to establish momentum in the creation and maintenance of the abstractions throughout the project.
如果在一开始就引入了平台抽象的概念，就能更容易地推动项目期间抽象的创建和维护工作。
The tedium of JDBC development led to the creation of the object relational mapping (ORM) framework, which provides a data access abstraction layer.
冗长乏味的JDBC开发导致对象关系映射(ORM)框架的诞生，该框架提供一个数据访问抽象层。
The creation of wrapper-facades for these components hid the details of complex interactions between the legacy components, and also provided an abstraction that protected new code from legacy code.
为这些组件创建包装外观，会隐藏遗留组件间复杂的交互细节，并提供了一个抽象，使新旧代码不致混淆。
应用推荐