Archaean era

• 太古代

Archaean era的用法和样例：

例句

1. He says by examining oxidation rates they have shown the mantle has cooled several hundred degrees since the Archaean.
   丹尤柴夫斯基说，通过检测氧化的速度，他们证明了自从太古代以来，地幔冷却了好几百度。
2. The mother rock derived form Archaean and Early Proterozoic metamorphic rock from the north-east part of Ordos Basin.
   该区延长组母岩主要来自盆地东北缘的太古代及早元古代变质岩。