然后，你必须收集树项目和树的列信息(第25 - 31行)。

You must then gather the tree items and column information of the tree (lines 25 to 31).

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本文综合考虑骨干网的大小、节点能量及路径，提出了一种基于广度优先搜索的数据收集树算法，并采用局部式方法进行维护。

This paper proposes a breath-first search based data collection tree algorithm that taking in account size of backbone, energy of node and path. The data collection tree is maintained locally.

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随着太阳能电池板变得更加便宜，这个世界有可能会看到更多被太阳能电池板覆盖的摩天大楼，像树一样收集能源。

As solar panels get cheaper, the world is likely to see more skyscrapers covered in solar panels, collecting energy much like trees do.

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