precedence of an operator的用法和樣例：
例句
- Why would an administrator change the value of the spanning-tree priority of a switch?
網管為何要修改交換機上關於生成樹協議中用到的優先權呢？ - An access strategy with the combination of channel reservation and preemptive priority is given to a handoff voice call.
在本方案中為具有越區切換請求的話音呼叫提供了預留切換通道和強佔數據業務的優先權相結合的接入策略。
