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数学不是关于数字、方程、计算或算法的:它是关于理解的。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
粮食安全是国家安全的基石,我们必须牢牢把握在自己手中。
"History is not just about the past; it is a living entity that shapes our present and future."
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
Leadership is not about being in charge; it’s about taking care of those in your charge.