英语词汇“upper cambrian”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 cambrian
释义	Upper Cambrian Upper Cambrian [′əp·ər ′kam·brē·ən] (geology) The latest epoch of the Cambrian period of geologic time, beginning approximately 510 million years ago.
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Upper Cambrian