1.
To furnish(an arch) with a keystone.
用拱顶石装饰（拱顶）
2.
The keystone in the crown of an arch.
拱顶石位于拱顶的塞缝石
3.
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
4.
The top stone of a structure or wall.
拱顶石，压顶石，顶层石建筑物或墙的最上面一层石头
5.
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
6.
We hope to see you become a keystone of the intellectual community.
我们希望看到你们成为知识界的一块拱顶石。
7.
ceramics keystone (excl. of siliceous fossil meals or similar siliceous earths) refractory
陶瓷拱顶石（不包括硅质化石粗粉或类似硅质）,耐火的
8.
The Greek fret or key pattern, used in art and architecture.
桥，柱希腊的回纹装饰和拱顶石装饰，用于艺术和建筑
9.
at the head of the stone steps arose an archway.
在石阶的顶端出现一道拱门。
10.
a pointed arch; usually has a joint (instead of a keystone) at the apex.
一种尖角拱；在顶点通常有一个接合点（而不是拱心石）。
11.
An arched structure, usually of stone, brick, or concrete, forming the supporting structure of a ceiling or roof.
拱顶一种拱形结构，通常由石头、砖头或混凝土构成，形成某一天花板或屋顶的支撑结构
12.
The church has a vault.
那座教堂的屋顶是拱顶。
13.
Design and Application of Moulding Board and Support of the Intersection Section Crown of the Diversion Tunnel in the Jishi Gorge Hydropower Plant
积石峡导流洞交叉段顶拱模板及支撑系统设计与应用
14.
Construction of the Crown Concrete of the Intersection Section of Diversion Tunnel and Middle Flood Discharging Tunnel in the Jishi Gorge Hydropower Station
积石峡水电站导流洞与中孔泄洪洞交叉段顶拱混凝土施工技术
15.
Analysis on Influence of Quartz Veins Invasion Zone to Stability of Surrounding Rock at Underground Powerhouse Crown in Expansion Project of Yantan Hydropower Station
岩滩扩建工程石英脉侵入带对厂房顶拱围岩稳定性影响分析
16.
But nature had counterfeited art in its construction, for she had turned the arch of its roof with stones as delicately fitted as if by the hand of man
但大自然似乎模仿了建筑艺术，把岩石在洞顶精巧地排列成拱形，仿佛是能工巧匠盖出拱门。
17.
The dark cedars on either side of the gravelled drive met in an arch overheed, turning the long avenus into a dim tunnel.
铺满碎石子的马道两旁，黝黑的雪松在头顶形成拱顶，把长长的林荫道变成幽暗的隧道。
18.
"In stone ceilings, the use of pendant vaulting was a solution to the difficulty of adapting fan vaulting to very wide church naves."
由于教堂中堂的宽度较以往增大,悬垂拱顶以悬垂体解决了在石制天花板中使用扇形拱顶的困难。