自由民主的传播和世界经济的整合创造了一种情况，即大国不再愿意相互开战。

爱国英雄给民族带来光荣，专制暴君给民族带来灾难。

Innovation in natural gas extraction is key to meeting the world's growing energy demands.

The best thing about success is being able to share it.

物理学的美在于它能够用简单而优雅的理论解释复杂的事物。