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。

成功的游戏公司不仅要赚钱，还要对社会有正向影响。

中国水果要走向世界，必须建立国际化的标准体系。

Agriculture is the foundation of manufacture and commerce.

Loneliness is a lifelong companion, an established fact. Instead of denying it, fighting it, and avoiding it needlessly, you’d better accept it, let it protect you from going home in the crowd, and let it accompany you to breakfast on Saturday morning and tidy up the sunshine.

用音乐记录生活，用生活丰富音乐。