For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.
对于系统,翻版的模拟是在控制图中添加一个创建循环的边,而不仅仅是一个附加节点。
The ladder of success is best climbed by stepping on the rungs of opportunity.
每一部电影都是一次旅程,每一次旅程都是一部电影。