A vertex with zero outdegree is called a sink.出度为零的顶点称作收点.Vertex a is the initial vertex and b is the terminal vertext.a顶点是始端顶点,而b是末端顶点.An edge corresponds to a corridor and a vertex to the conjunction of several corrido...
The lovely Lo Fo of the western land Plucks mulberry leaves by the waterside.秦地罗敷女,采桑绿水边....the Waterside Inn.水畔客栈...pretty waterside hotels.美丽的湖畔旅馆There was great excitement among the Moorish people at the waterside.海边的...
The parrot squawked and flew away.鹦鹉尖声叫了叫飞走了。If you have not kept a pet parrot before, it would be wise to purchase a handbook on the subject.如果以前没有养过鹦鹉，最好买一本相关的饲养手册。He keeps a parrot in a birdcage in his living room.他在客...