| 单词 | Triassic period |
| 释义 | Triassic period (once / 176408 pages) n WORD FAMILY Triassic period: Triassic periods USAGE EXAMPLESDinosaurs first appeared about 225 million years ago, during the Triassic period. Washington Post(Apr 19, 2016) "To have them from the Triassic period, which is the very beginning of the age of reptiles, is really unprecedented, especially in western north America." US News(Oct 16, 2015) Encased in their flinty bulk is the fossilized narrative of a rich marine life that perished in the Triassic period over 200 million years ago. New York Times(Aug 13, 2015) n from 230 million to 190 million years ago; dinosaurs, marine reptiles; volcanic activity Syn|Exp Triassic geological period, period a unit of geological time during which a system of rocks formed |
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