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。
Stay true to yourself and never let what somebody else says distract you from your goals.
水产养殖的未来在于可持续发展和环境保护。
You forget what you want to remember, and you remember what you want to forget.
唯一真正有价值的是你分享的爱。