that helped them in the dark. 帮助它们在黑暗中生存

15. away from the giants.
    远离巨兽
16. They became nocturnal,
    它们变成了夜行性动物
17. developing a range of heightened senses
    发展出一系列敏锐的感官
18. that helped them in the dark.
    帮助它们在黑暗中生存
19. Under the dinosaurs' rule,
    在恐龙的统治之下
20. there was a limit to how far they could rise.
    它们的崛起受到限制
21. But in time, everything changed.
    但是随着时间的推移 一切都改变了

来自《我们星球上的生命 第一季 第七集 Life on Our Planet S01E07 地球继承者》第 18 行