For the most part, they were small, keeping to the trees... 在大部分情况下 它们都很小 在树上栖息
...that early mammals were confined to the shadows. 以至于早期的哺乳动物只能躲在暗处
ruled over by the greatest dynasty that ever lived... 被史上最伟大的王朝所统治
Hidden in the ancient Jurassic forests... 躲藏在古代侏罗纪森林之中
This is the story of their epic journey... 本集将讲述它们史诗般的征程