The Bush administration believes that the US is entitled to take preemptive action against imminent nuclear threats or against terrorists with big plans. 布什政府相信,美国政府有权采取先发制人的行动,抵御迫在眉睫的核威胁或是有着野心勃勃计划的恐怖主义分子。
We're compelled to take preemptive action. 我们必须率先采取强制性措施。
When the received signal power is below the dangerous threshold, Link State Analysis module is initiated to predict the broken time of the link. A preemptive route maintenance action is taken in advance if the predicted broken time is less than response time. 若节点接收信号强度小于危险阈值,则启动链路状态分析模块预测链路失效时间,如果预测结果小于反应时间,就提前进行路由维护。