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.
理解计算的极限与推动其边界同样重要。
I have always been a prisoner of poetry.
孩子是最苛刻的观众,但也是最值得的。
出自《海国图志》。圣人把天下当作一家,四海的人都是兄弟,所以对远方的人采取怀柔政策,以宾客的礼仪对待外国,这是王者的大度;普遍了解边塞民族的风俗,广泛博览全球风貌,这是智慧之人的远见卓识。