The modularity system will not expose you to things you have not declared as a requirement.
模块化系统不会告诉您未声明为需求的内容。
The modularity system can then match you with what you need irrespective of which module provides it.
模块化系统可以很好地匹配您的需求，而不需要考虑是哪个模块提供的。
This allows developers to design modular application architectures on top of a lower-level modularity system such as OSGi.
这使得开发者可以在低层次的模块化系统(如osgi)之上设计模块化应用架构。
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