The first rule 第一条法则是

85. from the beginning of life to the infinite variety we know today,
    从生命的起源 到我们今天所知的无尽多样性
86. has been driven by certain fundamental principles.
    都受到某些基本原则的驱动
87. The rules of life.
    生命法则
88. The first rule
    第一条法则是
89. is the best adapted will always win through.
    适者生存
90. Every one of these butterfly eggs looks identical.
    这些蝴蝶卵 每一颗看起来都一模一样
91. But each has a different combination of genes
    但每一颗都具有不同的基因组合

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 88 行