B + tree can be viewed as a B-tree in which each node contains only keys (not key-value pairs), and to which an additional level is added at the bottom with linked leaves.
树可以被视为B树，其中每个(内部)节点仅包含键(不是键值对)，并在其底部附加一层链式的叶子节点。
The Italy World Cup winner has been linked with a move to Arsenal following Juventus' relegation to Serie b.
这位世界杯冠军门将在尤文降入乙级后，已经和阿森纳联系在了一起。
The Italy World Cup winner has been linked with a move to Arsenal following Juventus' relegation to Serie b.
这位世界杯冠军门将在尤文降入乙级后，已经和阿森纳联系在了一起。
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