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The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.
"The true essence of a story lies not in its plot, but in the emotions it evokes and the truths it reveals."
农业是国家的根本;军队是国家的武器,城廓是守护自身的保障。这三者是国家应当具备的。
"The novel is a mirror that reflects the complexities of human existence."