agnotozoic era的用法和樣例：
例句
- The mineralization epoch is the early period of mesoproterozoic Era.
成礦時(shí)代為中元古代早期。 - The Shengong Movement in late Middle Proterozoic Era was strong and the superimposed fold of Junning Movement in late Qingbaikou Period was clear.
中元古代末的神功運動(dòng)表現強烈，青白口紀末的晉寧運動(dòng)疊加褶皺明顯。
