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	Word Frequency keystone (ˈkiːˌstəʊn) noun 1. Also called: headstone, quoin the central stone at the top of an arch or the top stone of a dome or vault 2. something that is necessary to connect or support a number of other related things
随便看	on the job on-the-job training on the jump on the knocker on the lam on the level on the loose on the make on the market on the mend on the money on the move on the nail on the nod on the nose on the off-chance on the off chance on the outer on the panel on the parish on the part of on the pig's back on the piss on the point of on the port bow

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