在转型期间,石油和天然气行业在全球能源结构中发挥着关键作用。
The right of a nation to kill a tyrant in case of necessity can never be doubted until the right of a tyrant to kill a nation has been proved.
The dialogue that happens between the viewer and the work of art is really the art.
计算机科学中的挑战不仅仅是解决问题,而是理解为什么它们首先是问题。