英语词汇“upper cretaceous”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 cretaceous
释义	Upper Cretaceous Upper Cretaceous [′əp·ər kri′tā·shəs] (geology) The late epoch of the Cretaceous period of geologic time, beginning about 90 million years ago.
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Upper Cretaceous