在不确定的时期，清晰的沟通和果断的行动比以往任何时候都更重要。
"In times of uncertainty, clear communication and decisive action are more important than ever."
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.
韧性是通过挑战而非安逸建立的。
每个数学问题都有一个解决方案；有时只是需要时间去找到它。