现代国家的挑战是在提供服务和维护秩序的同时保持其合法性。
The challenge for modern states is to maintain their legitimacy while also being effective in providing services and maintaining order.
可持续性不是选择，而是必然。
Sustainable quarrying isn't an option; it's our obligation to future generations.
If we want to protect forests, we must first understand them.
The best decisions are made when you listen to the people closest to the problem.