出于清晰性的考虑，在本例中，我们选择首先使用高层次演示图来呈现一个物理模型，然后使用一个更加具体的结构图。
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。
These three departments have purposeful overlap of responsibilities as illustrated in the Venn diagram above.在维恩图中这三个部门的重叠是有意为之。
