The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome given the alternatives.
自由民主在世界范围内的传播并非不可避免，但考虑到其他选择，它是最有可能的结果。
The major problems in biology are not solved by new techniques but by new concepts.
The study of formal languages and automata is essential for understanding the theoretical underpinnings of computer science.
投资是一种对未来的信心，对经济发展和创新的信心。
城市是生活上演的舞台。