英语词汇“chemical fossils”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	chemical fossils
释义	chemical fossils chemical fossils [¦kem·i·kəl ′fäs·əlz] (geology) biomarkers chemical fossils chemical fossils traces of chemicals such as porphyrins and alkanes which are said to be indications of life having existed before the formation of true fossil-bearing rocks.
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