语法和语义之间的相互作用是形式语言研究的核心。
自由政府的唯一准则应该是不要信任任何拥有权力的人,以免危及公共自由。
I'm not afraid of hard work. I grew up in a family where hard work was a way of life.
The forest does not belong to us—we belong to the forest, and our duty is to protect it.
The novel is the great modern epic because it can contain everything: poetry, history, philosophy, politics.