单词keystone
n.: 拱顶石；基础
adj.: 吉斯通式的
网络: 拱心石；凯斯通；重点
拱顶石:
the central stone at the top of an arch that keeps all the other stones in position
（计划、论据的）主旨，基础:
the most important part of a plan or argument that the other parts depend on
【无线电】梯形失真(光栅)
【键】拱顶石,冠石,塞缝石
吉斯通式的
嵌缝碎石
基本原则
楔形畸变
封拱石
基本原理
重要项目
要旨,根本原理
〔建〕拱顶石;〔无〕梯形失真;〔机〕键槽,锁座
基石
重点
复数：keystones
n.foundationbasisbedrockunderpinninggrounding
Here were two guys from one of the biggest PR agencies in the world, blustering around Silicon Valley like a pair of Keystone Kops.
全球最大的一家公关机构中出来了一对像启斯东警察（KeystoneKops）的家伙在硅谷散步流言。
Just as a keystone holds together a stone arch, Pennsylvania was seen as holding together the young American republic.
正如垒成牌坊的基石，宾夕法尼亚州被视为维系了年轻的美利坚共和国。
Free and fair elections are the keystone of any democracy. They are essential for the peaceful transfer of power.
自由公正的选举是任何民主制度的基石，对于和平的权力交接至关重要。
Beijing has made renewable energy a keystone of its energy policy and aims to raise solar power capacity tenfold in the next five years.
中国政府已经将发展可再生能源定为其能源政策重点，计划在未来5年内将太阳能发电装机容量增至目前的10倍。
The environmental community has tried to build public awareness using keystone species, like the panda or koala.
环境社会试图提供公众意识，用重要的物种，如熊猫、考拉来做宣传。
The keystone of this mammoth industrial empire was the Chase National Bank, now renamed the Chase Manhattan Bank.
这个庞大的工业帝国的支柱是大通国民银行（现已更名为大通曼哈顿银行）。
The chunk of stone - why did it keep rising in his mind? The keystone. One pull of the keystone and the whole wall comes tumbling down.
厚厚的石块——为什么这个词持续出现在欧比万脑海中？是主石块！只要拉动它，整面墙就会倒塌。
The party was the keystone of a political system that has long been crumbling.
政党是一个政治体系长久以来为何分解的拱心石。
It concluded that the shrubby vegetation was the keystone for the biodiversity conservation in the region.
所以，在本地进行生物多样性保护中应该重点放在灌丛植被。
Therefore, XForms can become the keystone of a highly productive declarative and XML-centric development environment.
因此，XForms可能成为高生产率的声明性的、以XML为中心的开发环境的基础。