unheard of
形容词 adj.
英文释义
形容词 adj.
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Alternative spelling of unheard-of (used as predicative)
— Such was the station provided for the infrequent services of 1852, when suburban traffic was unheard of, and Hornsey, Colney Hatch & Southgate, Barnet, and Potters Bar were the only intermediate stations on the 17¾ miles between London and Hatfield.
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数据来源: Wiktionary