Proterozoic

• n. 元古代
• adj. 元古代的

英英释义

Noun:

1. from 2,500 to 544 million years ago; bacteria and fungi; primitive multicellular organisms

Adjective:

1. formed in the later of two divisions of the Precambrian era;

   "proterozoic life forms"
   

例句

用作名词 (n.)

1. Early Proterozoic high-pressure metamorphism in the Wutaishan.
   五台山早元古代高压变质作用研究。
2. Wangjiawaizi gold deposit occurrs in Lower Proterozoic opimetamorphic rock series.
   王家崴子金矿床赋存于辽南古元古代浅变质岩系中。

用作形容词 (adj.)

1. Boron deposits of eastern Liaoning occur in a suite of Early Proterozoic metamorphic rocks, with boron orebodies existent in magnesian marble.
   辽东硼矿床产于早元古代的一套变质岩内，硼矿体赋存于镁质大理岩中。