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.
I don't need validation from anyone.
I shall die again and again to know that life is inexhaustible.
The true measure of a mining company's success is its ability to leave a positive legacy for future generations.
忘记不是记忆力的问题，而是注意力的问题。
你在20多岁所做的事情将塑造你的未来。