永远不要停止学习，因为生活永远不会停止教导。

"The key to success is to focus on goals, not obstacles."

The world is full of poetry. The air is living with its spirit; and the waves dance to the music of its melodies, and sparkle in its brightness.

The interplay between syntax and semantics is central to the study of formal languages.

生物体不仅仅是其基因的总和，而是一个复杂发育系统的产物。

每一次突破都始于一个问题。