| 释义 |
agnotozoic era
基本例句
元古代
The mineralization epoch is the early period of mesoproterozoic Era.成矿时代为中元古代早期。
The Shengong Movement in late Middle Proterozoic Era was strong and the superimposed fold of Junning Movement in late Qingbaikou Period was clear.中元古代末的神功运动表现强烈，青白口纪末的晋宁运动叠加褶皱明显。 |