A feat it first achieved in the oceans. 这一壮举首先在海洋中实现

42. from which all life, everything, is descended.
    一切生命都是它的后裔
43. From these humble beginnings,
    生命肇始如此卑微
44. life took billions more years to develop real complexity.
    又花了数十亿年 才发展出真正的复杂性
45. A feat it first achieved in the oceans.
    这一壮举首先在海洋中实现
46. The earliest animals to attain supremacy
    最早实现统治地位的动物
47. were simple life forms.
    是简单的生命形式
48. These invertebrates, animals without backbones,
    这些无脊椎动物

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 45 行