制造链式反应机器的根本点当然是确保每次裂变产生一定数量的中子，其中一些中子将再次产生裂变。
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.
The United States should not try to spread democracy around the world.
The greatest foe to liberty is the inert majority.
The future belongs to those who can imagine it differently.
领导力是激励他人实现他们认为不可能的事情。
未知不是要害怕的东西，而是要拥抱的东西。
数据抽象是将特定数据集简化为整体的简化表示。