*Decorator 常被翻译成"装饰"，我觉得翻译成"油漆工"更形象点，油漆工(decorator)是用来刷油漆的，那么被刷油漆的对象我们称decoratee.这两种实体在Decorator 模式中是必须的。-* Decorator is often translated as　decorative , I think that translated into　painter　more image points, painter (decorator) is used to paint, then paint the target of being we call decoratee. These two entities in the Decorator mode is necessary.