The greatest misfortune is not knowing what's enough.
在量子力学的领域里,观察者和被观察者密不可分,这对我们关于现实的经典观念提出了挑战。
The only limit to our realization of tomorrow is our doubts of today.
钢铁行业必须拥抱可持续性,才能在21世纪生存下去。