Huge surges of water sweep across North America. 洪水横扫北美
a realm dominated by huge marine reptiles. 这是一个 被巨大海洋爬行动物主宰的国度
But just as these huge dinosaurs were devouring the plants around them, 但就在这些巨大的恐龙 吞食周围的植物时
this group of ancient reptiles made a huge evolutionary step. 这群古代爬行动物 就迈出了巨大的进化步伐
thanks to huge changes to the very structure of our planet. 这得益于地球结构的巨大变化
The long calm helped dinosaurs to proliferate in huge numbers. 长♥期♥的平静令恐龙数量激增
...has produced the huge diversity that exists today. 产生了现存的巨大的生物多样性