| 单词 | Silurian |
| 释义 | Silurian (once / 6520 pages) n WORD FAMILY Silurian: Silurians USAGE EXAMPLESTheir numbers began to decline throughout the Silurian, Devonian and Carboniferous periods, before completely petering out by the end of the Permian for reasons unknown. The Verge(Jul 10, 2016) The surveys are carried out between May to October by scientists and volunteers on board Silurian, the trust's dedicated research yacht. BBC(Nov 04, 2015) About 420 million years ago, near the end of the so-called Silurian period, the last of a series of mass extinctions struck the world’s oceans. Science Magazine(Aug 25, 2015) n from 425 million to 405 million years ago; first air-breathing animals Syn|Exp Silurian period geological period, period a unit of geological time during which a system of rocks formed |
| 随便看 |
|
英语词典包含147318条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。