单词：fossil record
fossil record的用法和样例：
例句
- Further evidence could come from the fossil record.进一步的证据可能要借助于化石记录。
- Although the fossil record is incomplete, it still gives us a broadbrush outline of what happened.尽管化石记录不很完全，但仍然给我们一幅关于到底发生了什么事情的大体轮廓。
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