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

城市是一个活生生的有机体。

最重要的关系是你与自己的关系。

"Collaboration across disciplines is the key to groundbreaking discoveries."

The diversity of exoplanets is astonishing, ranging from gas giants to rocky worlds, some of which may harbor life.

一个成功的农场是既能滋养人类又能滋养环境的农场。