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.
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。
"Reality is a cliché from which we escape by metaphor."
实现明天理想的唯一障碍是今天的疑虑。
Technology will lead us to new frontiers in energy exploration.