英语词汇“keystone”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	keystone
释义	keystone n. 1. the central principle of a system, policy, etc., on which all the rest depends. 2. a central stone at the summit of an arch locking the whole together.
随便看	couth couture couturier couvade couvert couverture covalency covalent cove coven covenant covenanted covenanter Coventry cover coverage coverall covering coverlet covert coverture covet covetous covey covin

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