数学不知道种族或地理边界;对于数学来说,文化世界是一个国家。
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
Innovation in technology can drive efficiency and reduce the environmental impact of mining operations.
光线不断变化,每分钟都在改变事物的氛围和美感。
动态规划理论基于最优性原理,该原理指出,无论初始状态和初始决策如何,剩余决策必须构成关于第一个决策所导致状态的最优策略。