keystone

英['ki:stəun]美['ki:stəun]

n.
1.【建】拱顶石
2.（计划、论据的）主旨，基础

同：	[n.] anchor, backbone, headstone, key

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收藏
Quantitative measurements of one sort or another serve as the keystone of engineering practice
定量测定一种或多种成分是环境工程中的重要项目。收藏
Belief in a life after death is the keystone of her religious faith
她的宗教信仰的基础是相信死後有来生收藏
Check if the digital keystone function is active. Adjust if necessary
检查数字梯形调整功能是否激活，必要时调整收藏
To furnish(an arch)with a keystone.
用拱顶石装饰(拱顶)收藏

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a central cohesive source of support and stability
- faith is his anchor
- the keystone of campaign reform was the ban on soft money
- he is the linchpin of this firm
[同] keystone, anchor, backbone, linchpin, lynchpin, mainstay
the central building block at the top of an arch or vault
[同] headstone, key, keystone

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