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 noun : a fossil that is usually of narrow time range and wide spatial distribution and that is used in the identification of related geologic formations (as in locating new petroleum reserves)
随便看	trigs trigynia trigynian trihalide trihalomethane trihedral trihedral trihedral angle trihedron trihybrid trihybridism trihydrate trihydrate trihydrated trihydric trihydroxy trihydroxy trihydroxy- triiodide triiodothyronine trijet trijugate trikaya trike trikerion

英语词典包含332784条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。