英语词汇keystone怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	keystone
释义	keystone/ˈki:stəʊn/n. 1 the central principle of a system, policy, etc., on which all the rest depends (体系、政策等的)主旨；基本原则；基础 2 a central stone at the summit of an arch locking the whole together 拱顶石
随便看	sanity San Juan sank San Marinese San Marino sannyasi sans sans-culotte sans-culottism Sanskrit Sanskritic Sanskritist sans serif Santa Claus Santiago santolina santonica santonin sanyasi sap sap sap sapanwood sapele sapful

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