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These are the most numerous birds on Earth.
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These are the most numerous birds on Earth. 这些鸟是地球上数量最多的鸟

The gazelles move on to new pastures and leave the desolation behind them.
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The gazelles move on to new pastures and leave the desolation behind them. 瞪羚们远离了这片狼籍不堪的荒芜之地 继续行进 寻找新的草原

Without trees, eagles have to nest directly on the ground.
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Without trees, eagles have to nest directly on the ground. 没有了树,鹰只能直接把巢安在地面上

Predators also have a hard time raising their young on open grassland.
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Predators also have a hard time raising their young on open grassland. 掠食动物在这片空旷的草地上繁衍后代也并不轻松

The plains of our planet support the greatest gatherings of wildlife on Earth.
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The plains of our planet support the greatest gatherings of wildlife on Earth. 草原维系了我们行星最丰富多彩的生命群落

and now look ready to take on the world.
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and now look ready to take on the world. 它们已经做好了当上这个世界的主人的准备

The chicks grow quickly on a diet of fish and squid.
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The chicks grow quickly on a diet of fish and squid. 小企鹅长得很快,吃小鱼和鱿鱼

But there is hope on the horizon.
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But there is hope on the horizon. 但是希望就在地平线那边

Thirty days after it last set, the sun rises once more on Antarctica.
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Thirty days after it last set, the sun rises once more on Antarctica. 南极洲的太阳在落山30天后 再次升起

who are still huddling, defying the coldest conditions on the planet.
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who are still huddling, defying the coldest conditions on the planet. 它们还挤在一起面对着地球上最严酷的挑战