Ordovician

音标发音

• 英式音标 [ˌɔː.dəˈvɪʃ.ən]
• 美式音标 [ˌɔːr.dəˈvɪʃ.ən]
• 英式发音
• 美式发音

基本解释

• n.奥陶纪；奥陶系
• adj.奥陶纪的

同根派生

• Ordovician相关词

英汉例句

用作名词 (n.)

• 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。
• 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;

• Ordovician更多例句

英英字典

剑桥英英字典

• from or referring to the period of time between about 485 and 445 million years ago, in which there were many different types of animals in the sea, including vertebrates (= animals with back bones), but no life on land

• Ordovician剑桥字典
• Ordovician柯林斯字典