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.
你无法阻止浪潮，但你可以学会冲浪。
我总是努力对自己和他人保持诚实。
没有绝对的安全，只有相对的风险控制。
"Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful."
一本好的图画书应该完全不需要文字也能表达。
你唯一应该努力超越的人就是昨天的自己。
解释：国家垂危败亡，一定是因为任用了奸邪小人。