The P versus NP problem is one of the most important unsolved problems in computer science.
Collaboration across borders is essential to combat deforestation and climate change.《全球森林管理》
I'm not a singer, I'm an entertainer.
每个人内心都有一个秘密世界。我是说,世界上所有的人。每个人。无论他们在外面看起来多么沉闷无聊,他们的内心都有难以想象、壮丽、奇妙、愚蠢、惊人的世界。不止一个世界。可能有成百上千个。
安全总是过度的,直到它不够为止。