英语词汇“keystoner”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	keystoner
释义	key·ston·er \ˈkēˌstōnə(r)\ noun Usage: usually capitalized Etymology: Keystone State, nickname for Pennsylvania (from its central position among the original 13 states) + -er : pennsylvanian 1 — used as a nickname
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