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单词
index fossil
释义
index fossil
英?[?indeks ?f?sl]
美?[??n?d?ks ?fɑs?l]
释义
标准化石
英英释义
Noun
1. a fossil known to have lived in a particular geologic age that can be used to date the rock layer in which it is found
行业词典
地质学
标志化石???
生物学
标志化石???
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更新时间:2026/3/3 8:22:29