A theory should not attempt to explain all the facts, because some of the facts are wrong.
制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子,其中一些中子再次有效地产生裂变。
The only way to do great work is to love what you do.
Innovation is not a slogan, but something we do every day.