In addition to realization, you can represent dependency--the relationship between a component and an interface through which it accesses another component.
谁帮我分析下成分啊 看不咋懂啊！ 谢谢！
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除了“实现”外，你可以用“依赖”来描述一个组件与一个接口的关系，通过该接口能够访问其它组件。