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→Directed walk, trail, path 有向的步道，轨迹，路径
Some authors do not require that all vertices of a directed path be distinct and instead use the term simple directed path to refer to such a directed path.
Some authors do not require that all vertices of a directed path be distinct and instead use the term simple directed path to refer to such a directed path.
有些学者并不要求有向路径的所有顶点都是不同的，因此他们用“简单有向路径”这个术语来表示它。