jellyfish were the first to venture out of the shallows 水母率先冒险离开浅海

88. But not for long.
    但不会太久
89. Free at last.
    终于自♥由♥了
90. Thanks to their ability to swim,
    由于会游泳
91. jellyfish were the first to venture out of the shallows
    水母率先冒险离开浅海
92. and into the big blue.
    进入巨大的蓝色海洋
93. Here, with fish yet to evolve,
    在这里 鱼类尚未进化
94. jellyfish were entirely free of predation.
    水母完全摆脱了被捕食的危险

来自《我们星球上的生命 第一季 第二集 Life on Our Planet S01E02 第一前线》第 91 行