文学是社会的镜子，反映其美德和恶习。
The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.
教育的目标不是增加知识的数量，而是为孩子创造发明和发现的可能性，培养能够创新的人。
The best way to predict the future is to create it.