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	key·stone /ˈkiːstəʊn/ n. 1. 【建】拱顶石；塞缝石 2. 基础；主旨；基本原则 the keystone of sb.'s faith 某人信仰的基础 The keystone of their foreign policy is friendliness to all nations. 他们外交政策的基本原则是和所有国家都友好相处。
随便看	cu. cm cu.cm., cu cm Cu, Cu. cuculiform cucullate cucullated cucullately cucullately cucumber cucumber mosaic cucumber mosaics cucumbers cucumber tree cucumber trees cucumiform cucurbit cucurbitaceous cucurbits cud cudbear cudbears cudded cuddie cuddies cudding

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