The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.
可能近似正确（PAC）学习的概念在计算学习理论中具有基础性意义。
艺术不是反映现实的镜子，而是塑造现实的锤子。
When it's tough， will you give up， or will you be relentless？
如果没有合适的人分享，成功就毫无意义。
Leadership in fisheries means having the courage to make tough choices for long-term benefits.
勇气是压力下的优雅。