追求高效算法的核心是一項數(shù)學努力，它挑戰(zhàn)了我們對復雜性和可計算性的理解。
Innovation is the key to the future of coal industry, we must embrace new technologies and ideas.
The system is not a system of production, but a system of consumption.
Hold on to your dreams, even if the whole world doubts you.
El hombre más poderoso es el que es due?o de sí mismo.