And their fossils are often preserved as layered rock structures, called stromatolites.
它们的化石通常保存为层状岩石结构,称为叠层石。
单词 | layered rock |
例句 |
原声例句
TED演讲(音频版) 2019年10月合集 And their fossils are often preserved as layered rock structures, called stromatolites. 它们的化石通常保存为层状岩石结构,称为叠层石。 |
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