自由不仅仅意味着摆脱自身的枷锁，还意味着以一种尊重并增加他人自由的方式生活。
The challenge for modern states is to maintain their legitimacy while also being effective in providing services and maintaining order.
Understanding the computational complexity of learning problems is essential for developing efficient algorithms.
A chain is no stronger than its weakest link, and life is after all a chain.
