音标:[.ɒ:dәu'viʃәn] ;
n. 奥陶纪, 奥陶系
a. 奥陶纪的
n. from 500 million to 425 million years ago; conodonts and ostracods and algae and seaweeds
词型变化:名词复数形式 : ordovicians
词性分布:
形容词100%

Ordovician的用法和样例:

例句

用作名词(n.)
  1. This was the result from the large-scale regression in the Late Ordovician.这是奥陶纪晚期大规模海退的结果。
  2. Major hydrocarbon source rocks are in the Cambrian and Ordovician.寒武-奥陶系烃源岩是该区主力烃源岩;

词汇搭配

  • Lower Ordovician早奥陶世
  • Ordovician period奥陶纪
  • Upper Ordovician晚奥陶世
  • the Ordovician奥陶纪
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