如果服务器部署在计算机集群中，那么最前端的节点是惟一的关键机器；其他机器可以随意启动和停止，崩溃了也不要紧。

If your servers are pooled in a compute cluster, the head node is the only crucial machine; the rest can start and stop and crash freely.

youdao

手动、遥控任选，可随意定停止幕面位置。(注：该幕是手动开关控制升降)。

Manual or remote control is optional. Free to stop the screen at any location.

youdao