历史的伤痕并非总是可见的，但它们始终存在。
"The scars of history are not always visible, but they are always there."
I always felt that my greatest asset was not my physical ability, it was my mental ability.
译文：做事要三思而后行，否则就会后悔，人要善于忍耐才不会有忧患。赏析：不管是说话还是做事，我们都要三思，不经过大脑的话和事只会伤害别人。忍一时风平浪静，事事都要争个输赢，只会两败俱伤。
Modern quarrying must marry the wisdom of geology with the innovation of engineering.
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 a complicated place, and I try to reflect that in my writing.
