短语词组短語Recursive Traversal 遞歸遍歷traversal algorithm 遍歷算法traversal type [計]遍歷類型website traversal 網站遍歷traversal method 遍歷方法postorder traversal 後序遍歷breadth traversal 廣度遍歷traversal instability 橫波不穩定traversal record 遍歷記錄 返回 traversal