创造一切非凡事物的那种神圣的爽朗精神总是同青年时代和创造力联系在一起的。

For systems, the analogue of a face-lift is to add to the control graph an edge that creates a cycle, not just an additional node.

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.

描绘孤寂夜景，展现诗人独立苍茫的心境

我经历了生活中的许多坎坷，但我依然在这里

The story of women’s work is a mirror held up to society’s values and priorities.