1.
To furnish(an arch) with a keystone.
用拱顶石装饰（拱顶）
2.
The church has a vault.
那座教堂的屋顶是拱顶。
3.
The keystone in the crown of an arch.
拱顶石位于拱顶的塞缝石
4.
a Norman arch, cathedral, etc
诺曼式拱顶、 大教堂等.
5.
The upper or exterior curve of an arch.
拱背线拱顶上面或外缘的曲形线
6.
An arch over an entrance or passageway.
拱门，牌楼入口或通道上的拱顶
7.
"Vault： In building construction, an arched structure forming a ceiling or roof."
拱顶:房屋建造中用拱作成的天花板或屋顶。
8.
To construct or supply with an arched ceiling;cover with a vault.
给…盖拱顶给…建造或盖以拱顶；以穹状物覆盖
9.
Either of the sides of an arch, curving down from the apex to an impost.
梁腋，拱腋拱门上任意一个从拱顶到拱墩间的部分
10.
having a hemispherical vault or dome.
有半球状的拱顶或圆屋顶。
11.
The part of a structure that bears the weight or pressure of an arch.
拱座，支座建筑承担拱顶重量或压力的部分
12.
The central wedge-shaped stone of an arch that locks its parts together.
拱顶石，塞缝石拱的中部楔形石头，使拱的各个部分连在一起
13.
A wooden frame built especially to support the sides of an arch until the keystone is positioned.
支拱板条专门用来在拱顶石放置好以前支撑拱的两边木架子
14.
A decorative sunken panel in a ceiling, dome, soffit, or vault.
饰板在天花板、圆屋顶、拱腹、拱顶内的下凹装饰镶板
15.
The arch receives the weight of the roof.
这拱门承受屋顶的重量。
16.
an arch with a pointed apex.
有一个尖锐的顶点的拱。
17.
A diagonal rib of a Gothic vault.
哥特式穹顶的对角拱柱
18.
The roof was prettily groined.
屋顶精致地做成圆拱形。