英语词汇“keystone”的读音、翻译、释义、用法及例句-初旭网

词汇	keystone
释义	key.stone可数名词 1‘建筑’ (拱门上端的) 拱心石, 楔石 2 要旨, 基本原理[of] 3 (又作 keystone sack) (棒球俚)二垒
随便看	lose losel loser losing loss loss leader loss ratio lost lost cause lost generation lost property lost river Lot Lot lot lotah loth Lothair I Lothair II lothario Lothians, The lotic lotiform lotion lotos

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