that even this salty water freezes over. 连盐水湖都会结冰

214. At over 14,000 feet,
     这里的海拔超过四千米
215. this is the highest flamingo colony in the world.
     是世界上海拔最高的火烈鸟栖息地
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

来自《行星地球 第二季 第二集 Planet Earth S02E02 山脉》第 217 行