在没有其他信息的情况下,参数的最佳估计是其样本值。
Success in the aggregates industry is not just about moving rocks; it's about moving the economy forward.
Every tree planted today is a legacy for generations we will never meet.
"Books are the mirrors of the soul, reflecting our deepest fears and desires."
你必须愿意冒险并突破界限,才能创造出真正原创的东西。