balanced_binary_search_tree_有道手机词典

1.The highly balanced binary search tree is established in order to improve efficiency of the binary search tree and to shorten the average search tree.
建立高度平衡的二叉搜索树是为了提高二叉搜索树的效率，减少树的平均搜索长度。
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2.Add and Remove operations are typically expensive since Binary Search Trees require that a tree be balanced.
添加和删除操作的开销是很大的，只主要是因为对半查找树的平衡性所决定的。
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