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。
The power of cinema is in its ability to connect us to the lives of others.
I have so much to prove to myself. I want to be better. I want to be smarter. I want to be more talented. I want to be more efficient. I want to be more creative.
一门科学的历史就是它的问题域的历史。