Keystone Correction梯形失真调节;梯形失真校正;梯形修正
keystone predator关键捕食者;之基石捕食者
keystone resources关键资源
Keystone Heights基斯通海茨;城市
arch keystone[建] 拱顶石
keystone sack二垒
Keystone Kapers警察抓小偷
Keystone Apartelle金斯敦阿帕特乐酒店
Keystone Monastery主修道院
N-COUNT（可数名词） A keystone of a policy, system, or process is an important part of it, which is the basis for later developments. 基础; 根本
The government's determination to beat inflation has so far been the keystone of its economic policy.
政府对通货膨胀的坚决抑制迄今为止一直是其经济政策的根本。
N-COUNT（可数名词） A keystone is a stone at the top of an arch, which keeps the other stones in place by its weight and position. 拱顶石 [技术]