BBC听力 | 海洋岛屿 09
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Isolated on the Galapagos
(海狮)它们在与世隔绝的加拉帕戈斯群岛
They've been here so long.
已很久了
They've become a separate species.
并成了一个独立的物种
When the surf's up
在拍岸浪花上
The sea lions spend hours just messing around in the waves.
海狮花数小时在浪中嬉戏
Surfing burns a lot of energy, and they can only do it
拍岸浪有着很大的力量，但它们只能这么做
because these cold seas support vast numbers of fish.
因为寒冷的海洋供养着无数的鱼类
The sea lions share these nutrient-rich waters
分享这些富含养分海水的
with another equatorial misfit.
是海狮和其它不适合在赤道生存的动物
Penguins--the only penguins found in the tropics.
企鹅-在热带安家的唯一企鹅
Like the sea lions, Galapagos penguins can survive here,
象海狮一样，加拉帕哥斯企鹅幸存于此
because the water keeps them cool and well fed.
依赖的是海水的低温和优质的食物
But these conditions are not constant.
但这样的环境并不是一成不变的
In El Nino years, when currents reverse, warm waters replace cold
在厄尔尼诺发生年份，洋流逆转暖水代替了冷水
fish populations crash and then, stuck on Galapagos
鱼群数量锐减，受困于加拉帕戈斯的
penguins and sea lions starve.
企鹅和海狮只有挨饿
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