To those beams, I attached rim joists and floor joists.

并在横梁上附加了龙骨和楼板搁栅。

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Upon entering a door I was surprised to find that there was actually a restaurant beyond, and not just wooden joists holding up the walls.

一进城门我不无惊奇地发现居然有一家真正的餐馆，而不只是木梁撑起来的墙壁布景。

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