The energy industry is not just about producing energy; it's about enabling human progress and improving lives.
估计问题的性质不同。在这里,我们不关心检验特定的假设,而是关心估计参数的值。
胜利不是一切,但渴望胜利就是一切。
"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."