The roof of the schoolhouse is covered with snow. 校舍的屋顶上覆盖着积雪。
They gave me a quotation for mending the roof. 他们给了我修理屋顶的报价单。
A roofed promenade, especially one extending along the wall of a building and supported by arches or columns on the outer side. 游廊,柱廊有覆盖物的散步场所,尤指从建筑物侧墙延伸出去的由拱和柱在外侧支持的廊