圆的周长大于任何内接等边多边形的周长,小于任何外切多边形的周长。
艺术是最高形式的希望。
Collaboration is the foundation of great achievements.
Success does not consist in never making mistakes but in never making the same one a second time.
我们都是自己经历的囚徒。
Trust is the foundation of every strong relationship, whether with employees, customers, or partners.