and prepared for a fight. 为战斗作好了准备

4. A fearsome predator of its age.
   那个时代可怕的捕食者
5. Standing in the way, a giant terror bird, two meters tall.
   站在身高两米的巨大骇鸟面前
6. Both sides are armed...
   双方全副武装
7. and prepared for a fight.
   为战斗作好了准备
8. This is the story of the great battles for survival
   本片将为大家讲述伟大的生存之战
9. and the dynasties that would take over the world.
   以及将会统治世界的各王朝的故事
10. This is the story of life.
    这是生命的故事

来自《我们星球上的生命 第一季 第一集 Life on Our Planet S01E01 生命法则》第 7 行