advancing two and a half miles a day. 一天扩大2.5英里

70. and the ocean starts to freeze.
    海洋开始结冰
71. The greatest seasonal change on our planet is underway.
    我们这个行星上最显著的季节变化正在发生
72. The ice grows at an extraordinary rate,
    冰盖的面积以非凡的速度扩大
73. advancing two and a half miles a day.
    一天扩大2.5英里
74. In a matter of weeks, the continent effectively doubles in size.
    几个星期之内, 整个南极大陆的面积将扩大为原来的两倍
75. Life flees from Antarctica.
    生物纷纷逃离南极洲
76. But one creature is just arriving.
    但偏有一种生物赶来

来自《行星地球 第一季 第六集 Planet Earth S01E06 冰雪世界》第 73 行