keystone

美音音标: ['kiː.stəʊn] keystone
英音音标: ['kiː.stəʊn] result.0.expl|add:"

同义
backbone anchor keystone linchpin lynchpin mainstay
词性
n
解释
a central cohesive source of support and stability
示例
faith is his anchor|the keystone of campaign reform was the ban on soft money|he is the linchpin of this firm

同义
key keystone headstone
词性
n
解释
the central building block at the top of an arch or vault
示例
None