英语词汇“index fossil”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	index fossil
释义	index fossil n. The fossil remains of an organism that lived in a particular geologic age, used to identify or date the rock or rock layer in which it is found. Also called guide fossil.
随便看	intangibility intangible intangibleness intangibly intarsia integer integrability integrable integral integral calculus integral domain integrality integrally integrand integrant integrate integrated circuit integrated circuitry integration integrationist integrative integratively integrator integrin integrity

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