英语词汇“upper silurian”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	upper silurian
释义	Upper Silurian Upper Silurian [′əp·ər sə′lu̇r·ē·ən] (geology) The latest epoch of the Silurian period of geologic time.
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Upper Silurian