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。