跨国合作是解决水产养殖全球性挑战的关键。
P与NP问题是计算机科学中最重要的未解决问题之一。
To love is to see the world through another's eyes.
The beauty of virology is that viruses teach us the rules of life by breaking them.
地质时间不仅漫长,而且其事件的发生是不规则的。