The concept of probably approximately correct (PAC) learning has been foundational in computational learning theory.

实现明天的唯一限制将是我们今天的疑虑。

The computer is a medium of expression, like a piano is a medium of expression.

森林不需要我们，而是我们需要森林。

在一个不断发展的行业中，适应性是关键。

乳制品应该既营养又美味。

艺术家的职责是通过可见的事物揭示不可见的东西。