locking up much of the planet's fresh water. 将地球上的大量淡水锁住

87. But that was just the beginning.
    但这还只是一个开始
88. As Antarctica became colder and more isolated,
    随着南极变得更加寒冷与孤立
89. the huge continent froze,
    整个南极大♥陆♥冻住了
90. locking up much of the planet's fresh water.
    将地球上的大量淡水锁住
91. As the world further north dried out,
    随着世界北部进一步干旱
92. it became a harsher, more difficult place to live.
    它成为了 一个更恶劣、更难以生存的地方
93. Food became more spread out,
    食物变得更分散

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 90 行