下古生界包括寒武系和下、中奥陶统，主要由海相碳酸盐岩构成。

下古生界包括寒武系和下、中奥陶统，主要由海相碳酸盐岩构成。的英文翻译

基本释义

• The Lower Palaeozoic group mainly includes Cambrian, medial and lower Ordovician, which are marine carbonate in the district.