在计算学习的背景下，“可能近似正确”（PAC）学习的概念为理解学习算法的效率和可行性提供了一个框架。
In the context of computational learning, the concept of 'probably approximately correct' (PAC) learning provides a framework for understanding the efficiency and feasibility of learning algorithms.
我不相信运气，我相信努力。
跳舞吧，就像没有人观看一样；去爱吧，就像从未受过伤害一样。
Every hour, she thinks, someone forges the rings, someone carves the cradle, someone loses the war.