A strongly connected digraph D is one in which any vertex can be reached from any other vertex by a directed path.
若有向图D中任何两个顶点是互相可达的，则称D为强连通图。
The mathematical induction is a method of proof often applied in mathematics. The most common and the most famous inductive way is the simple directed path.
数学归纳法是数学中常常用到的一种证明方法，最常见而最为人们所熟知的归纳途径是简单的有向路。
In its crudest form, any object can become a space weapon if directed into the path of a satellite.
在最粗糙的情况下，任何物体只要被引导到某枚卫星的轨道上，都能成为一件太空武器。
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