人类大脑由许多专门化的神经回路组成，这些回路进化出来是为了解决我们祖先在进化历史中面临的特定问题。
The human brain consists of many specialized circuits that evolved to solve specific problems our ancestors faced during our evolutionary history.
Die Freiheit ist ein Gut, das man täglich neu erobern muss.
To understand the future of secure communication, one must first understand the limitations of current cryptographic methods.
从字符串中提取意义很困难，但是它们是我们唯一可以依靠的交流硬币。
