年轻的树木被用作住所的支柱，防水的树皮被用作屋顶。
The young trees were used as supports for lodgings, with the waterproof bark used as roofing.
用了一些支柱以防止屋顶塌落。
加入屋顶表面的支柱和窗户表面，并使用斑马线分析，以检查表面的连续性问题。
Join the roof surface to the pillar and the Windows surfaces together and use the zebra analysis to check for surface continuity issues.
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