Coal’s future depends on our ability to make it cleaner and more efficient.

We need to think about poverty not as a monolithic problem but as a series of interconnected issues that require tailored solutions.

拓扑绝缘体的美在于它们的鲁棒性；它们的表面态受到对称性和拓扑的保护，使它们对某些类型的无序免疫。

信念有创造的力量，也有毁灭的力量。

The dynamics of perception are governed by the principle of Prägnanz (good form).