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.
我们就是我们记住的东西。
文学是人类的记忆，没有记忆就没有身份。
The energy crisis is a solvable problem—if we act now.
也许我就是美国的混蛋