小于给定数的素数个数是该数的一个函数。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
When we strive to become better than we are, everything around us becomes better, too.
法律的主要功能是为社会秩序提供一个框架。
Transparency in aquaculture practices builds trust with consumers and drives long-term success.
局外人
The ocean feeds millions; our duty is to protect it while harnessing its potential.
不要让任何人告诉你你不能做某事