Prime numbers are what is left when you have taken all the patterns away. I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.
The best detectives are the ones who never stop asking questions.
价值链是通过其创造并将产品或服务交付给客户的一系列活动。
Labor market institutions play a crucial role in shaping economic outcomes.