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.
建筑不仅仅是一个所在之处,更是一种观看的方式。
The brave may not live forever, but the cautious do not live at all.
The beauty of mathematics only shows itself to more patient followers.
研究历史的人,贵在能够贯通古今的变化,探究天道与人事的关系。