的意思 triassic

1. The Triassic period occurred approximately 250 million years ago.
三叠纪大约发生在2.5亿年前。

2. Fossil records from the Triassic period provide valuable insights into ancient life forms.
三叠纪时期的化石记录为我们提供了有关古代生物形态的宝贵见解。

3. Many dinosaurs first appeared in the Triassic period.
许多恐龙首次出现在三叠纪时期。

4. The Triassic period was known for its diverse range of marine reptiles.
三叠纪时期以其多样化的海洋爬行动物而闻名。

5. The extinction of many species at the end of the Triassic period paved the way for the rise of the dinosaurs.
三叠纪末期许多物种的灭绝为恐龙的兴起铺平了道路。

6. Geologists study the rock formations from the Triassic period to learn more about the Earth's ancient history.
地质学家研究三叠纪时期的岩石形成，以更多地了解地球的古代历史。