In Listing 1, we assign message priority simply on a round-robin basis.

在清单1中，我们简单地按循环方式分配消息优先级。

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A plan is organized on the basis of two elements, priority and sequence.

方案的制定基于两大要素：优先级和先后顺序。

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A plan is organized on the basis of two elements, priority and sequence.

方案的制定基于两大要素：优先级和先后顺序。

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