Proterozoic
英 [ˌprɔtərəˈzəuik] 美 [ˌprɑtərəˈzoɪk, ˌprotə-]

n.& adj.

原生代（的）；

英英释义

Proterozoic

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

  同义词：Proterozoic eonProterozoic aeon

• adj.formed in the later of two divisions of the Precambrian era

  "proterozoic life forms"

词组短语

proterozoic era元古代；原生代

双语例句

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。

权威例句

Eukaryotic Organisms in Proterozoic Oceans
Late Proterozoic Low-Latitude Global Glaciation: The Snowball Earth
Eumetazoan Fossils in Terminal Proterozoic Phosphorites?
Microbial Mats in Terminal Proterozoic Siliciclastics: Ediacaran Death Masks
Late Proterozoic rise in atmospheric oxygen concentration inferred from phylogenetic and sulphur-isotope studies
Geological characteristics and tectonic setting of proterozoic iron oxide (CuUAuREE) deposits
Calcified metazoans in thrombolite-stromatolite reefs of the terminal Proterozoic Nama Group, Namibia
Macroscopic Carbonaceous Compressions in a Terminal Proterozoic Shale: A Systematic Reassessment of the Miaohe Biota, South China
Neodymium isotopes in the Colorado Front Range and crust|[ndash]|mantle evolution in the Proterozoic
Origin of the Eumetazoa: Testing ecological predictions of molecular clocks against the Proterozoic fossil record