语法和语义之间的相互作用是形式语言研究的核心。
The interplay between syntax and semantics is central to the study of formal languages.
"The future belongs to those who believe in the beauty of their dreams."
Often it is the means that justify the ends: Goals advance technique and technique survives even when goal structures crumble.
情绪是为机体行动做准备的生物信号。