Think about a company like Amazon and the common "Customers who purchased X also purchased y" feature. If Amazon were to create a classification tree, how many branches and nodes could it have?

举个例子，亚马逊这样的公司常常使用“购买了X的顾客还购买了Y ”特性，如果亚马逊拟创建一个分类树，那么它将需要多少分支和节点？

youdao

A DN is a set of attribute-value pairs that represent a path through an X.500 directory information tree. Here is an example.

DN是一套属性值对，表示穿过X . 500目录信息树的路径。

youdao

The inheritance tree for these existing controls is the same as ASP.NET 1.x.

这些现有控件的继承树与asp.net 1 . x的相同。

youdao

Macroscopic learners need to see the whole X-Mas tree before they start to hang the ornaments.

FORBES: Totally Addictive Education: The Future of Learning

The subspecies of cicadas known as Brood X has been underground for the last 17 years, tapped into tree roots, feeding and fattening up.

NPR: Roar of the Cicada

"X Marks the Spot" is a song on Sample's 2002 Album, "The Pecan Tree, " dedicated to his Houston roots.

NPR: A Jazz Single Sees One Man Through