| 释义 |
triassic period 释义 三叠纪:地质年代的一个时期,距今约2.5亿年前,是中生代的第一个时期,紧随二叠纪之后。 例句 1·This was towards the end of the Triassic period . 那时已是三叠纪末期。 2·Dinosaurs first appear in the fossil record during the Triassic period , some 230m years ago. 根据化石记载,恐龙最早出现在三叠纪期间,也就是大约2亿3000万年以前。 3·Conodonts went extinct at the end of the Triassic Period , about the time dinosaurs were evolving. 牙形刺在三叠纪末期灭绝了,这正是恐龙开始演化的时代。
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