Every simplepath from a node to a descendant leaf contains the same number of black nodes.
从节点到后代叶节点的所有简单路径都包含相同的黑节点数。
2
Through what primal paradise in a remote morning of creation ran the simplepath by which their hearts visited each other.
在远古创世的清晨,哪一条太初乐园的单纯的小径,的心曾彼此访问过。
3
XML query includes content query and structural query. The query condition can be represented as a simplepath expression (SPE) or a regular path expression (RPE).