barrel roof

例句：

1. 1. The old barn had a barrel roof that was falling apart.
   那间老谷仓有一个桶形的屋顶，正在逐渐破损。
2. 2. The new house has a barrel roof that looks very modern.
   新房子有一个桶形的屋顶，看起来非常现代。
3. 3. The barrel roof on the old church is still standing after centuries of use.
   这座旧教堂的桶形屋顶在经过几个世纪使用后仍然屹立不倒。