Long before the existence of birds, 在鸟类出现之前很久
before she's big enough to stand up for herself. 才能长到足够强大 能够保护自己
Others had made this transition before them. 其他动物先它们一步完成了这种转变
allowing them to grow bigger and stronger than ever before. 使植物能够生长得比以往任何时候 都更大、更强壮
Millions of years before the age of dinosaurs... 在恐龙时代之前数百万年
And before long, the race to dominate the land would begin. 不久之后 主宰陆地的竞赛将揭开帷幕
with more diversity than ever before. 其多样化程度前所未有
And one group adapted in a way never seen before. 有一群生物以前所未见的方式 适应了这种转变
would go on to change our planet like nothing before. 将以前所未有的方式改变我们的星球