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。
我曾梦到往日的一个梦。
痛苦并不总能带来转变，有时它只是伤害。
质量不是一个目的地，而是一个旅程。
Innovation in mining technology isn't an option—it's an obligation we owe to both our workers and the environment.
曾子说：“我每天都要多次提醒自己：工作是否敬业？交友是否守信？知识是否用于实践？”
True progress happens when we step out of our comfort zones and embrace change.
做伟大工作的唯一方法就是热爱你所做的事情。
A play is fiction—and fiction is fact distilled into truth.