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2047 篇文章
These endangered birds are visitors. They've come down from the north to escape the even colder conditions in Siberia.
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These endangered birds are visitors. They've come down from the north to escape the even colder conditions in Siberia. 这些濒临灭绝的鸟儿从更加寒冷的西伯利亚来访

endangered colder conditions siberia visitors birds escape come they've these down north from in the to are even
the deciduous forests are changing.
Walden 21
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the deciduous forests are changing. 可以看到落叶林在不断变化

changing deciduous forests the are
Leaves that have provided food and shelter since the spring, are now shed.
Walden 21
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19 0 1

Leaves that have provided food and shelter since the spring, are now shed. 从春天开始提供给动物食物和掩护的树叶 开始脱落了

provided shed leaves shelter since spring food that have the are now and
Male red deer are starting their rut.
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Male red deer are starting their rut. 雄性马鹿正在按惯例行事

red rut starting deer their male are
The rules are simple.
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The rules are simple. 规则很简单

rules simple the are
the days are beginning to shorten,
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the days are beginning to shorten, 白昼开始缩短

shorten days beginning the to are
The nutrients in a generation of cicadas are returned to the soil, all at once
Walden 21
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The nutrients in a generation of cicadas are returned to the soil, all at once 这些蝉给土壤提供了大量养分

cicadas returned generation soil once nutrients at of all in the to are a
that soon all the predators are full to the point of bursting
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that soon all the predators are full to the point of bursting 使得捕食者数量很快就暴涨

bursting point full soon predators of all that the to are
The adults are clumsy and very edible.
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The adults are clumsy and very edible. 成年蝉不仅笨拙而且非常美味

clumsy edible adults very the are and
At first, there are merely thousands
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At first, there are merely thousands 一开始,不过几千只

merely thousands at first are there