英语词汇“lower 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	lower cretaceous
释义	Lower Cretaceous Lower Cretaceous [′lō·ər krə′tā·shəs] (geology) The earliest epoch of the Cretaceous period of geologic time, extending from about 140- to 120,000,000 years ago.
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Lower Cretaceous