—— 请按键盘 空白键 开始游戏 ——

The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.
"Brands must remain true to their heritage while constantly evolving to meet new consumer expectations."
我不需要任何人来完整我。
每天学习,尤其是从别人的经验中学习。它更便宜!“——约翰·博格尔
You can't knock on opportunity's door and not be ready.