One of the simplest examples of priority inversion, illustrated in the top diagram in Figure 2, involves three threads: one high (h), one medium (m), and one low (l) priority thread.

图2最上面的图表解释了一个最简单的优先级反转示例，它涉及三个线程：一个高级(H)、一个中级(M)和一个低级(L)优先级线程。

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The inversion of priorities delays both the low- and the high-priority thread from making progress.

优先级反转将延迟低优先级线程和高优先级线程的执行。

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Dependency Inversion Principle states that we should decouple high level modules from low level modules, introducing an abstraction layer between the high level classes and low level classes.

依赖倒置原则声明了我们应该将高层模块和低层模块解偶，在高层类和低层类之间引入一个抽象层。

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