Eventually, the sun thins the ice, 终于太阳晒薄了冰面

216. At night, it gets so cold
     这里的夜晚非常寒冷
217. that even this salty water freezes over.
     连盐水湖都会结冰
218. And now the flamingos are trapped in the ice.
     这些火烈鸟就被冻在了冰里
219. Eventually, the sun thins the ice,
     终于太阳晒薄了冰面
220. but it's still a struggle for the flamingos to break free.
     但是火烈鸟仍然需要努力冲破冰层
221. Walking on thin ice is always risky.
     走在薄冰上总是危机四伏
222. And it's hard to retain one's dignity...
     而且当你踩着高跷的时候

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 219 行