英语词汇“upper ordovician”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	upper ordovician
释义	Upper Ordovician Upper Ordovician [′əp·ər ‚ȯr·də′vish·ən] (geology) The latest epoch of the Ordovician period of geologic time, beginning approximately 440 million years ago.
随便看	richard karlovich maak richard korf richard krafft-ebing richard kroner richard kuhn richard laurence millington synge richard laurence synge richard lawrence day richard l. berkley riverfront park richard leakey richard lee richard l heryng richard l heschl richard lion-heart richard l neu richard loeb richard lovelace richard maak richard malcolm johnston richard martin willstätter richard matthew stallman richard, maurice richard mellon scaife richard melville hall richard mentor johnson

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Upper Ordovician