Triassic
adjective geology specialized uk/traɪˈæs.ɪk/ us/traɪˈæs.ɪk/
三叠纪的，三叠系的（约2.45-2.08亿年前之间的地质年代，其间恐龙开始出现）
from or referring to the period of time between around 245 and 208 million years ago, in which dinosaurs (= large reptiles that no longer exist) first appeared
the Triassic period 三叠纪，三叠纪时期
Triassic plants 三叠系植物
the Triassic
noun ukus
三叠纪，三叠纪时期
the Triassic period