geological era

geological era[dʒɪəˈlɔdʒɪkəl ˈiərə] 

geological era 基本解释
地质代;
geological era 网络解释

geological era的解释

1. 地质时代:geological age 地质年代 | geological era 地质时代 | geological history 地质历史

geological era 英英释义

noun

1. a major division of geological time
    an era is usually divided into two or more periods

    Synonym: era