When the selection of the routine is based instead on more complex logic, such as the state of the resolution of an L3-to-L2 address mapping, the routine used at any time depends on external events that cannot be predicted.

• 当常式的选择被替代在比较复杂的逻辑,像是决定L3-到-L2地址映射状态的时候,在随时被用的常式依靠外部事件,那是不可预测的。