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单词 三叠纪
释义 〔Triassic〕The Triassic Period or its system of deposits.三叠纪,三叠系:地质年代中的三叠纪或沉积矿床的系〔Mesozoic〕Of, relating to, or being the third era of geologic time, including the Triassic Period, the Jurassic Period, and the Cretaceous Period and characterized by the development of flying reptiles, birds, and flowering plants and the appearance and extinction of dinosaurs. See table at geologic time 中生代的:包括三叠纪、侏罗纪和白垩纪在内的地质史上第三个时代的,它以飞行的爬虫类、鸟类及开花植物类的发展和恐龙的出现与灭绝为特征,或关于这个时代的 参见 geologic time〔Triassic〕Of, belonging to, or being the geologic time, system of rocks, and sedimentary deposits of the first period of the Mesozoic Era, after the Permian Period of the Paleozoic Era and before the Jurassic Period of the Mesozoic Era. See table at geologic time 三叠纪的,三叠系的,三叠纪岩石的:属于或关于中生代的第一个时期的,这个时期岩石系的和沉积矿床的,在古生代的二叠纪元后,中生代的侏罗纪之前 参见 geologic time〔ichthyosaur〕Any of various extinct fishlike marine reptiles of the order Ichthyosauria of the Triassic Period to the Cretaceous Period, having a porpoiselike head and an elongated, toothed snout.鱼龙:三叠纪至白垩纪间的属于鱼龙目的水生爬行动物中的任一种,现已绝迹,该动物头象海豚,喙长,有牙〔ceratodus〕Any of various extinct lungfishes of the genusCeratodus, of the Triassic and Cretaceous periods. 澳洲肺鱼,角齿鱼:三叠纪和白垩纪的一种已灭绝的角齿鱼属 肺鱼
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