统一自然界所有力的挑战是几十年来推动理论物理学发展的动力之一。
Sustainability isn't a choice—it's a responsibility we owe to future generations.
电影是社会的镜子,我们有责任诚实地反映它。
Great brands are built on integrity and delivering on promises.
The poor often have to make more complex financial decisions than the rich.