fossil bacteria

• 化石细菌

fossil bacteria的用法和样例：

例句

1. Walcott was the first geologist to identify pre-Cambrian fossil bacteria from microscopic examination of thin rock slices.
   沃尔科特是第一个在岩石薄片镜检中鉴定出前寒武纪化石细菌的地质学家。