回忆就像影子 - 它们无处不在跟着你，即使在没有光的时候。
Memories are like shadows - they follow you everywhere, even when there's no light.
Outstanding leaders go out of their way to boost the self-esteem of their personnel. If people believe in themselves, it's amazing what they can accomplish.
Architecture is the making of the form of the city.
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。
The world is like a chessboard， whereon we may see a living knight， but we cannot see a living chess.