| 摘要 |
A structure has rear(20), side(26), front(24) walls and a roof, and can be converted from a solid collapsible structure, functioning as a fence, to the structure enclosing a space. The roof is pivotably connected to the rear wall, the side wall is to the rear wall, and the front wall is to the roof along the upper edge. The structure can be used by engaging a bottom wall or on the ground without it.
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