109 篇文章
They winter along the Gulf of Mexico, and in spring they fly the entire length of North America to reach the Arctic tundra.
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They winter along the Gulf of Mexico, and in spring they fly the entire length of North America to reach the Arctic tundra. 它们在墨西哥湾越冬 等到春天便一路飞过北美洲 来到这里的北极苔原

In some ways, these birds are the penguins of the north.
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In some ways, these birds are the penguins of the north. 在一些人的眼里, 这些海雀是北极的企鹅

and the whales will soon be forced north as winter returns.
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and the whales will soon be forced north as winter returns. 很快冬季又到了 这些鲸鱼将不得不前往北方

Its long arm extends further north than the rest of the continent, so spring arrives here first.
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Its long arm extends further north than the rest of the continent, so spring arrives here first. 这里与南极洲的其它地方相比更靠近北边, 所以春天先来到这里

and are on their way north to the southern United States.
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and are on their way north to the southern United States. 正向北飞往美国南部

Structures like these in North America's Carlsbad Cavern
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Structures like these in North America's Carlsbad Cavern 北美洲卡尔斯巴德溶洞中的这些构造

Further north, they hold other dangers.
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Further north, they hold other dangers. 在更远的北方 它们还潜藏着其它危险

As the sun's influence diminishes in the north,
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As the sun's influence diminishes in the north, 在北方 随着太阳影响力的减弱

it lightens the skies in the far north.
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it lightens the skies in the far north. 照耀在遥远的北方天空