1801 篇文章
but he'll have to do more than flutter his eyelids, if he wants to impress her.
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but he'll have to do more than flutter his eyelids, if he wants to impress her. 但要给雌鸟留下好印象的话它还需要加倍的努力

but they have to change their behaviour if they are to gather what they need on the newly flooded plains.
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but they have to change their behaviour if they are to gather what they need on the newly flooded plains. 但若想在这块刚被洪水淹没的草原上觅食 狒狒也得改变自己的习性

but they have no choice.
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but they have no choice. 但没有办法

But lions have much more sensitive eyes.
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But lions have much more sensitive eyes. 而狮子有着更加锐利的视力

but she does have 10.
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but she does have 10. 但母猪确生了有10只小猪

0ne will have to do.
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0ne will have to do. 总有一只难逃噩运

when all the geese have gone.
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when all the geese have gone. 以作雪雁迁徙之后的食物之用

Huge quantities of grass, valuable food, have been lost.
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Huge quantities of grass, valuable food, have been lost. 大量的青草 宝贵的食物,片刻之间便化为乌有

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