A digraph D is unilateral.有向图D是单连的.We shall abbreviate'directed graph'to digraph.我们将把“有方向的图”简称为方向图.There fore we study the kings of locally semicomplete digraph by its characterization.文章通过研究局部半完全有向图的结构定理,分类讨论了...
阿姆斯特朗拿不准自己的人生远景在何方。Armstrong is uncertain where his long-term future lies.他们对公司的远景不那么乐观。They are less sanguine about the company's long-term prospects.这家企业的远景极其美好.The enterprise has excellent prospects....