Traditional network management is centralized management, manager adopted the method of alternation inquire and got command by sending management information to users.

传统的网络管理采用的是集中式管理，由管理者利用轮询机制，对被管理者发布管理信息获取命令。

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Based on the command pattern, utilizing the isolation of method invocation and method execution and using centralized schedule, we designed a flexible online evolution mechanism.

基于设计模式中的命令模式，利用方法调用与方法执行分离的原则和采用集中调度控制所有方法执行的方式，设计出一种灵活的软件在线演化机制。

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The cars talk to other cars and the surrounding terrain with sensors, and also stay in touch with centralized command posts.

FORBES: Self-Driving Cars Will Take Over By 2040