88 篇文章
they march hundreds of miles across the parched plains.
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they march hundreds of miles across the parched plains. 它们在干涸的平原上跋涉几百英里

But on most tropical plains across our planet, the wet season is followed by a dry one.
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But on most tropical plains across our planet, the wet season is followed by a dry one. 然而地球上的绝大多数热带草原 在经历雨季后总是要经历旱季的

and will often trek vast distances across these parched plains
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and will often trek vast distances across these parched plains 为了寻找绿洲

0ne and a half billion swarm across the savannahs of Africa.
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0ne and a half billion swarm across the savannahs of Africa. 以15亿的数量聚集在非洲的稀树大草原上

and the family will need to head out across the frozen sea before the mother's milk runs dry.
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and the family will need to head out across the frozen sea before the mother's milk runs dry. 在母熊奶水干涸之前 一家人需要穿越冰封的海洋

Flocks 40,000 strong sweep across the frozen wastes.
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Flocks 40,000 strong sweep across the frozen wastes. 4万只绒鸭飞越这一片冰天雪地的荒野

and they follow him closely as he travels across this desert
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and they follow him closely as he travels across this desert 它们一起紧跟着它穿越沙漠

ancient rivers flowing across sandstone country steadily widen their canyons
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ancient rivers flowing across sandstone country steadily widen their canyons 古老的河流冲开岩壁 不断拓宽这些峡谷

These sand scenes can be hundreds of miles across.
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These sand scenes can be hundreds of miles across. 这些沙漠布景可宽达数百英里

they came across whole galleries filled with the most unusual formations,
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they came across whole galleries filled with the most unusual formations, 他们发现了成片叹为观止的地貌