be a monument to something idiom
是…的丰碑；是…的不朽成果
to be an important and permanent result of an action or characteristic
The annual arts festival is a monument to her vision and hard work. 一年一度的艺术节展示了她的广阔视野和勤奋创作的成果。
Protesters have called the building a monument to corporate greed. 抗议者称这座大楼是企业贪婪的永久见证。