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| arbor | |||
| tree (A data structure containing zero or more nodes that are linked together in a hierarchy. If any nodes are present, one node is the root; each node except the root is the child of one and only one other node, and each node has zero or more nodes as children) | |||
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daraxt : 11 短语, 2 学科 |
| 一般 | 10 |
| 植物学 | 1 |