Special types of trees, called binary trees, restrict the number of children to no more than two.

有种特别的树，叫做二叉树，最多只能有两个子结点。

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Special types of trees, called binary trees, restrict the number of children to no more than two.

有种特别的树，叫做二叉树，最多只能有两个子结点。

youdao